A Timeline of the History of Life on Earth Humans have only been a species in the most recent chapter of the history of Earth. The Earth was formed 4.6 billion years ago, when the sun in our solar system first formed, creating enough gravitational pull to spin planets int...
A Timeline of the History of Life on Earth Humans have only been a species in the most recent chapter of the history of Earth. The Earth was formed 4.6 billion years ago, when the sun in our solar system first formed, creating enough gravitational pull to spin planets into orbit. But ...
For the history of life on Earth, organisms have relied on the light of the sun, moon, and stars to find their way and schedule their lives. While the beginning of electric lighting in the late 19th century may have benefited humans, it has caused problems in the natural world. Among th...
The ensuing mass extinction erased about three-quarters of Earth's species, including the dinosaurs at the end of the Cretaceous Period, paving the way for mammals - eventually including humans - to become dominant. The researchers determined that it was spr...
The specific objectives for IHOPE are to identify slow and rapidly moving features of complex social–ecological systems, on local to continental spatial scales, which induce resilience, stress, or collapse in linked systems of humans in nature. These objectives will be reached by exploring ...
It is the largest building construction project ever built by humans. 67.京剧是中华人民共和国一种老式艺术。它是中国戏曲一种,诞生于于1790年四大徽班(Four Great Anhui Troupes)入京表演时候。19世纪中期得到迅速发展,到清朝达到全盛阶段。京剧被当作是中国文化瑰宝之一。虽然它被称为京剧,但是它来源地...
Over 200 million years ago, on Earth there 3 a group of animals: the dinosaurs. They have dominated (支配) the Earth 4 up to 1.5 million years. However, dinosaurs died out 5 . Nobody knows why. And a very long time later, humans 6 and no one has seen a 7 dinosaur up to now...
Humans first evolved in East Africa about 2.5 million years ago from an earlier genus of apes called Australopithecus, which means ‘Southern Ape’. The earth of a hundred millennia ago was walked by at least six different species of man. 1.2 The Cost of Thinking Despite their many differe...
Until now, Nature’s scoops had been mostly in physics — the discovery of electrons, radioactivity, isotopes, X-rays — but here was an author contending that humans had originated in Africa, “thus vindicating the Darwinian claim that Africa would prove to be the cradle of mankind”. Many...
– heaviest person alive has lost an incredible 291 kg (641 lb or 45 st – the equivalent of 40 large bowling balls!), we take a look back at the story of the heaviest humans on Earth. It’s a tale that is by turns turbulent, tragic and even uplifting. ...