All of today’s big cat species evolved less than 11 million years ago and yet their evolutionary history remains an almost total mystery. But scientists have recently discovered a major clue about the origins of the big cats, one that...

Learn Spanish with "El Mono" - Story 4 - Episode 11 w/ Pop-ups!

Given certain parameters, how would you solve this problem?<br/>
Projectile Motion, Part 4

Since 2008, Beijing has been striving to improve its air quality. During the Olympics, the city placed restrictions on construction sites, gas stations, and an estimated 45% of Beijing's 3.3 million cars were taken off the roads in an...

One of the most dynamic, transformative, and potentially dangerous features in North America is also responsible for some of the continent's most amazing fossil deposits. It's a supervolcano we now call Yellowstone.

What are unalienable rights and why are they so important? In this video, we explore why Thomas Jefferson included them for the first time in the Declaration of Independence.

It was written over 1,000 years ago, and commissioned by an English King – so what makes the Magna Carta one of the most important documents in US history?

Check out how cats became our favorite little murder machines.



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If you want to learn more about this topic, here are some keywords to get...

Cecil was one of the most thoroughly studied lions in Africa. And thanks to him, we know several reasons why the death of one big cat can be a big deal.

Howcast - Contrary to legend, cats can be trained. Just think of the big cats in the circus if you have any doubts. Get your cat purring -- and doing what you want it to do.

It’s one of the most important documents in US history, but how did Thomas Paine’s 47-page pamphlet, Common Sense, turn the tide of the American Revolutionary War?

Barbara McClintock used corn to make pioneering discoveries in genetics, despite facing gender bias and initial skepticism from the scientific community.

Gary Soto, a Mexican-American author and poet, captures the essence of youth and Chicano experiences in his stories, blending humor and the magic of everyday life.

This video covers English language for things we do in and around our homes. It introduces the use of "let's," simple words, and expressions.

Explore the magnificent big cats of the Americas, including the powerful jaguar, the agile mountain lion, and the unique Florida panther. Learn about their habitats, hunting strategies, and conservation efforts to protect these iconic...

¡Hola! In this video lesson, we're going to be practicing the "impersonal se" or "passive se".

FOR this conservationist, there is only one way to start her day - by hanging out with leopards. Babette De Jonge, 50, founded Wild Cats World in 2010 to help conserve endangered big cats, such as leopards, black-footed cats and African...

Apple's M1 chip is the first in what the company calls a "family of chips" that is expected to grow later this year. The next iteration of Apple Silicon, the so-called M1X chip, may arrive in the second half of 2021 and power higher-end...

This video explains the pros and cons of using the composite pattern.
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This clip is from the chapter "Composite Design Pattern" of the series "Structural Design Patterns in Modern C++".This section focuses on the composite...

MOT 1938: REPRISING CONVERSATION: Director of Federal Bureau of Prisons Sanford Bates sitting at desk talking w/ two unidentified people FG saying prisons are breeding place for crime need system to rehabilitate. (Jail 'Revolving Door')

Check out how cats became our favorite little murder machines. Buy the CAT CAT T-shirt hereref='https://store.dftba.com/products/cat-cat-shirt' target='_blank' rel='nofollow'>hereSmartearn how dogs and humans got together, watch the...

This is a video in a new series to help people learn Spanish through repetition and storytelling.



This particular story is basic. We will be using the words from this episode in future episodes. The idea is to repeat words a...

Este video discute la importancia de clasificar los seres vivos y algunos de los criterios que utilizan los científicos en la clasificación. Se exploran los seis principales reinos, que incluyen Eubacteria, Archaebacteria, Protistas,...

Kids of all ages enjoy dancing and singing along with Baby Narwhal. Discover other fun ocean creatures as you swim with the baby narwhals. It's a great way to get the kids up and moving for some exercise. Fun and fitness - what a...