Tuesday, 22 December 2015

You have trusted us for many years to make safe and quality educational children's content that family members of all ages can enjoy. We understand how important privacy is to you and your family, which is why we are committed to creating a safe and secure environment that family members of all ages can enjoy. As a not-for-profit public institution, our goal is to collect only the information about our users and their use of our services that will help us provide the best online experience possible and implement PBS's mission.

This Privacy Policy describes how we use, share, and protect information that we collect from you and your child online through pbskids.org and any other non-commercial websites or online services that PBS operates and that link to this Privacy Policy (collectively, the "Services"). This Privacy Policy applies only to the Services.

Collection of Information

You or your child may be prompted to provide for some or all of the following types of information in order to register, access various content or features, submit photos and other content, directly contact us with questions or feedback, or access other features of the Services:

Contact information, such as name or e-mail address
User name and password
Geolocation information
Other information, such as school, city, state, and zip code
Communications preferences
Search queries
Comments and other information posted through interactive online features
Correspondence you send to us

Public Areas

Some of the Services may allow you or your child to enter text and information in open fields, such as comment sections, and message boards. If you or your child choose to participate in these public areas of the Services, please be aware that any information submitted through these areas is public. Please use caution in disclosing personal information in these areas. Although we moderate public forums to keep their content appropriate for the forum's intended audience, we are not responsible for the information you or your child submits in these open forums and public areas or for other user's actions with respect to that information.

Use of Information

We generally use the information that we collect about you or your child to:

Fulfill your or your child's requests for services and information
Enable you or your child to participate in interactive features, such as comment boxes and forums
Display content and information that you may be interested in
Customize the content displayed when you or your child use the Services
Analyze use of the Services to understand and improve our service offerings, such as determining which pages are most popular, which browsers are most used, how long users spend on the Services, and which websites they come from
Otherwise support the internal operations of the Services
Prevent potentially prohibited or illegal activities and enforce the Terms of Use
For any other purposes disclosed to you or your child at the time we collect the information or pursuant to your consent

We may aggregate your or your child's information with information about other users so that it no longer identifies and cannot reasonably be used to identify an individual person.

Disclosure of Information

We may share information that is collected from you or your child in the following circumstances:

Authorized third-party service providers. We may share information with our third-party service providers to help us fulfill requests and perform various functions necessary to our educational mission, including usage analytics, data processing, and account management. For example, our service providers may provide to us and analyze on our behalf usage information so that we can identify which of our services are most popular and how they can be improved.
PBS Member Stations. In some circumstances, we may share information we collect about you or your child with your local PBS member station(s).
Business transfers. We may share information in connection with a substantial business transaction, such as the sale of the Services, a merger, consolidation, asset sale, or in the unlikely event of bankruptcy.
Legal purposes. We may disclose information to respond to subpoenas, court orders, legal process, law enforcement requests, legal claims or government inquiries, and to protect and defend the rights, interests, property, safety, and security of PBS, our member stations, users, or the public.
With your consent. We otherwise may share your or your child's information with your consent.

We also may share aggregated or anonymized information with third parties, including to help us develop content and services that we hope you or your child will find of interest or to help these third parties develop their own products and service offerings.

Use of Cookies, Web Beacons, and Other Technologies

We may use cookies, web beacons, Local Shared Objects, and other similar technologies to collect information about your or your child's use of the Services. Cookies are small bits of information that are stored by a computer's web browser. Web beacons are very small images or small pieces of data embedded in images, also known as "pixel tags," "GIFs," or "clear GIFs," that can recognize cookies, the time and date a page is viewed, a description of the page where the pixel tag is placed, and similar information from a computer or device. Local Shared Objects (sometimes referred to as "Flash Cookies") are similar to standard cookies except that they can be larger and are downloaded to a computer or mobile device by the Adobe Flash media player.

We use these technologies, for example, to help us recognize your or your child's browser as a previous user and save and remember any preferences that may have been set; to help us customize the content shown while you or your child use the Services; to provide you or your child with content customized to your interests and to understand whether users read e-mail messages and click on links contained within those messages so that we can deliver relevant content and offers; and to help measure and research the effectiveness of our Services, interactive online content, features, and other communications.

We may allow third parties to place and read their own cookies, web beacons, and similar technologies to collect information through the Services. For example, our third-party service providers may use these technologies to collect information that helps us with traffic measurement, research, and analytics.

You may be able to refuse or disable cookies by adjusting your web browser settings. Because each web browser is different, please consult the instructions provided by your web browser (typically in the "help" section). Please note that you may need to take additional steps to refuse or disable Local Shared Objects and similar technologies. For example, Local Shared Objects may be controlled through the instructions on Adobe'sSetting Manager page. If you choose to refuse, disable, or delete these technologies, some of the functionality of our site may no longer be available to you or your child.

Parental Consent, Access, and Deletion

We endeavor to obtain a parent or legal guardian's consent before collecting, using, or disclosing personal information from children. Parents or legal guardians may contact us to ask if we have collected their child's personal account information, to review that information, if any, and request that PBS stop collecting this information and have it deleted. Such requests are subject to PBS verifying to our satisfaction that the requester is in fact the child's parent or legal guardian.

Protection of Information

We are committed to protecting your and your child's information. We have adopted reasonable technical, administrative, and physical procedures to help protect this information from loss, misuse, and alteration. Please note that no data transmission or storage can be guaranteed to be 100% secure. We want you to feel confident using the Services but we cannot ensure or warrant the security of any information you or your child transmit to us.

Third-Party Services, Content, and External Links

If you access third-party services, such as Facebook, Google, or Twitter, through the Services to share information about your experience on the Services with your friends and other connections, we may collect information about you from those services. In addition, those third-party services may be able to collect information about you, including information about your activity on the Services, and they may notify your connections about your use of the Services, in accordance with their own privacy policies.

You may access third-party content through the Services and navigate to third-party sites and services from links on the Services. Whether the third-party content appears within our Services (such as in an embedded video player), or you leave our Services to view the content on another website, the third party is in control of and independently produces, maintains, and monitors the content and third-party sites. When you watch third-party content that is made available through the Services or navigate to such third-party sites, you become subject to the third party's terms of use and privacy policies. You should review the privacy policies of these third-party sites for their policies and practices regarding the collection and use of your information as their policies may differ from ours. We do not accept any responsibility or liability for the privacy practices of third parties.

Changes To This Privacy Policy

We may revise this Privacy Policy, for example, to reflect changes in the law, our practices, or the features of the Services. These changes will be effective immediately upon posting. As a result, you should periodically review the Privacy Policy so that you are up to date on our most current policies and practices. By using the Services, you agree to the terms and conditions of this Privacy Policy, and, by continuing to use the Services after changes have been made, you agree to the changes.

Still Have Questions?

If you have any questions or concerns regarding this policy, please contact us at:

Public Broadcasting Service
2100 Crystal Drive
Arlington, VA 22202
(703) 739-5127
kids@pbs.org

Please read the Terms of Use for Terms and Conditions for using this site.

Dinosaur

Dinosaurs are a diverse group of animals of the clade Dinosauria. They first appeared during the Triassic period, 231.4 million years ago, and were the dominant terrestrial vertebrates for 135 million years, from the beginning of the Jurassic (about 201 million years ago) until the end of the Cretaceous (66 million years ago), when the Cretaceous–Paleogene extinction eventled to the extinction of most dinosaur groups at the close of the Mesozoic Era. The fossil record indicates that birds evolved fromtheropod dinosaurs during the Jurassic Period and, consequently, they are considered a subgroup of dinosaurs by many paleontologists.^[1] Some birds survived the extinction event that occurred 66 million years ago, and their descendants continue the dinosaur lineage to the present day.^[2]

Dinosaurs are a varied group of animals from taxonomic, morphological and ecological standpoints. Birds, at over 10,000 living species,^[3] are the most diverse group of vertebrates besides perciform fish.^[4] Using fossil evidence, paleontologists have identified over 500 distinct genera^[5] and more than 1,000 different species of non-avian dinosaurs.^[6] Dinosaurs are represented on every continent by both extant species and fossil remains.^[7] Some are herbivorous, others carnivorous. While dinosaurs were ancestrally bipedal, many extinct groups included quadrupedal species, and some were able to shift between these stances. Elaborate display structures such as horns or crests are common to all dinosaur groups, and some extinct groups developed skeletal modifications such as bony armor and spines. Evidence suggests that egg laying and nest building are additional traits shared by all dinosaurs. While modern dinosaurs (birds) are generally small due to the constraints of flight, many prehistoric dinosaurs were large-bodied—the largest sauropod dinosaurs may have achieved lengths of 58 meters (190 feet) and heights of 9.25 meters (30 feet 4 inches).^[8] Still, the idea that non-avian dinosaurs were uniformly gigantic is a misconception based on preservation bias, as large, sturdy bones are more likely to last until they are fossilized. Many dinosaurs were quite small: Xixianykus, for example, was only about 50 cm (20 in) long.

Although the word dinosaur means "terrible lizard", the name is somewhat misleading, as dinosaurs are not lizards. Instead, they represent a separate group of reptiles that, like many extinct forms, did not exhibit characteristics traditionally seen as reptilian, such as a sprawling limb posture or ectothermy. Additionally, many prehistoric animals, including mosasaurs,ichthyosaurs, pterosaurs, plesiosaurs, and Dimetrodon, are popularly conceived of as dinosaurs, but are not taxonomicallyclassified as dinosaurs. Through the first half of the 20th century, before birds were recognized to be dinosaurs, most of the scientific community believed dinosaurs to have been sluggish and cold-blooded. Most research conducted since the 1970s, however, has indicated that all dinosaurs were active animals with elevated metabolisms and numerous adaptations for social interaction.

Since the first dinosaur fossils were recognized in the early 19th century, mounted fossil dinosaur skeletons have been major attractions at museums around the world, and dinosaurs have become an enduring part of world culture. The large sizes of some groups, as well as their seemingly monstrous and fantastic nature, have ensured dinosaurs' regular appearance in best-selling books and films, such as Jurassic Park. Persistent public enthusiasm for the animals has resulted in significant funding for dinosaur science, and new discoveries are regularly covered by the media.

List of countries and dependencies by population

http://en.wikipedia.org/wiki/List_of_countries_and_dependencies_by_population

Figures used in this chart are based on the most up to date estimate or projections^[5] by the national census authority where available, and are usually rounded off. Where updated national data are not available, figures are based on the projections for 2015 by the Population Division of the United Nations Department of Economic and Social Affairs.^[6]

Because the compiled figures are not collected at the same time in every country, or at the same level of accuracy, the resulting numerical comparisons may create misleading conclusions. Furthermore, the addition of figures from all countries may not equal the world total. A handful of nations have not conducted a census in over 3 decades, providing high error margin estimates only.

Areas that form integral parts of sovereign states, such as the countries of the United Kingdom, are counted as part of the sovereign states concerned. Not included are other entities, such as the European Union,^{[Note 1]} that are not sovereign states, and dependent territories that do not have permanent populations, such as various countries' claims toAntarctica.

For a graphical version of this list, see list of countries by population (graphical). See also List of sovereign states and dependent territories by population density and the list of regional organizations by population.

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Last modified: July 1, 2013