A Giant Jurassic Sea Dragon, Unearthed - Dean R. Lomax - TED_重塑外语口语 15:00 1.How Gaming Can Be a Force for Good - Noah Raford - TED_ 14:06 2.You Don’t Actually Know What Your Future Self Wants - Shankar Vedantam - TED_ 14:10 3.Climate Action’s Hidden Opportunities ...
During the Ice Age, early humans lived alongside large animals like mammoths, saber-toothed cats and giant ground sloths. From cut marks on bones, researchers have deduced that early humans sometimes butchered and, presumably, ate the meat of these big creatures....
Armadillos are mammals, unique among this family of creatures for their shell, which covers their back, head, legs and tail. Owing to their startling variation in size – the pink-fairy variety grows to only 5 inches in length, while the fittingly named giant armadillo reaches 5 feet – th...
NARRATOR: Listen to part of a lecture in an archaeology class.FEMALE PROFESSOR: Between 11,000 and 10,000 B.C.E., North America was populated by a wide variety of great beasts like mammoths and mastodons—both elephant-like creatures with big tusks—and camels, giant sloths...mm, the ...
They found that themassin the central bulge (regardless of how big the disk surrounding it may be) is the key to knowing the colour of the whole galaxy. Above a given bulge mass, galaxies are red and have no new young stars. Almost all galaxies havesupermassive black holesat their centres...
Leasing giant pandas from China has become another strategy to draw visitors. But foot traffic subsides after two years, Young said, while zoos spend hundreds of thousands of dollars a year on bamboo that the pandas sometimes refuse. P...
"The people who chose to interact with thealgorithmwere sophisticated consumers; they were active shoppers who were seeking out information," says Polyakova. "This suggests that if we want to improve the choices of people who currently have the worst plans, then simply offering the tool online ...
Around 12,000 years ago, the first people to visit this land tracked mammoths, giant sloths, and camels until those animals died about 8,000 years ago, the National Park Service says. Because of the range in elevation in the park, it has more than 1,000 diverse plant species. #2. ...
Once utilized by native tribes 8,000 years ago to track giant sloths and mammoths, Zion Canyon was later settled by Mormon pioneers in the 1860s. Due to flash floods, early settlers faced great difficulty in the park as the sudden onslaught of raging waters could wash away entire towns. Co...
Iron and nickel within the molten Earth were the densest and sank to the center to form the core. Less dense materials settled above to form layers (outer core, mantle, crust). Geologists refer to this process as differentiation. (Note: In the outer gas giant planets, the cores may be ...