How to find wild adventures across the U.S., from hiking Hawaii’s highest peak to snowshoeing amid Michigan’s frozen waterfalls.
For thousands of years, people have told fables (寓言)61(teach) a lesson or to pass on wisdom. Fables were part of the oral tradition of many early cultures, and the well-known Aesop’s fables date to the62(six) c...
Henry Tyler made the catch of the year on the weekend. When he saw a young child hanging from a sixth-floor apartment balcony (阳台), Henry ran one hundred metres, jumped over a 1. 2-metre fence, and held out his arms to ...
One of the most abrupt and yet unexplained past rises in atmospheric CO2 (>10 p.p.m.v. in two centuries) occurred in quasi-synchrony with abrupt northern hemispheric warming into the Bølling/Allerød, ~14,600 years ago. Here we use a U/Th-date
thousand years ago (Kya) and ~ 119.3 Kya, respectively. Similarly, the Norwegian wild tundra reindeer was estimated to have diverged from the Norwegian domestic reindeer and the Eveny domestic reindeer ~ 12.0 Kya and ~ 22.0 Kya, respectively. We found that the divergence between ...
Microbes can also be found in the freezing temperatures of the arctic. On February 6, 2013 scientists first reported bacteria foundahalf-mile deep under the ice of Antarctica. In fact, since the arctic isn’t hospitable to other forms of life, bacterial communities dominate the biodiversity [3...
Then beginning about 125 years ago, the rate suddenly surged again to a bit more than a foot per century. Scientists attribute about half this rate to a process called subsidence, a long-term lowering of the crust in our quadrant of New England following the retreat of the glacier. ...
About 183 million years ago, volcanic activity in modern South Africa unleashed an estimated 20,500 gigatons of carbon dioxide (CO2) into the ocean–atmosphere system over a period of 300 to 500 thousand years. Known as the Toarcian Oceanic Anoxic Event (T-OAE), the lack of oxygen, ...
aI am not a winner,I am just an ordinary person,but I will give you happiness 正在翻译,请等待... [translate] aAnd the Arctic in a few thousand years will disapear too. 并且北极在几千年也是愿disapear。[translate]
These findings, including the oldest dated hominin occupations in Arabia, reveal at least five hominin expansions into the Arabian interior, coinciding with brief ‘green’ windows of reduced aridity approximately 400, 300, 200, 130–75 and 55 thousand years ago. Each occupation phase is ...