Earth and Sky:By Jeff Swicord Sarah Creek, Mary

Scientists Working to Save Chesapeake Bay Oyster Population Chespeake Bay The Chesapeake Bay, on the Atlantic coast, is the largest estuary in the United States. It is famous for its seafood, especially crabs and oysters. However, in the last centur

常春藤解析英语【51】The Earth's Biggest Threat地球危

The Earth's Biggest Threat 地球危机──温室效应 by Levi King Global warming was once considered unlikely to be real. Recently, though, it has become widely accepted as fact. Scientists have calculated that the earth's atmosphere has gotten

2006年VOA标准英语-2006 Red Earth Festival in Oklahoma Showcases D

By Joseph Mok and Wang Yiru Washington, DC 25 July 2006 watch Red Earth Festival report The 20th Red Earth Native American Cultural Festival was held last month in Oklahoma City, in the western United States. The festival's art and dance competition

VOA标准英语2010-Week-long Earth Celebration Culminates wi

A week-long Earth Day celebration has ended in Washington, D.C. The Earth Day Network hosted performances and information sessions to show people how to conserve natural resources and keep their communities clean. For the past week people gathered on

VOA标准英语2010-Week-Long Earth Day Celebration Begins in

Globes showing environmental challenges are lining the National Mall for Earth Day activities. Week-long activities to commemorate the 40th anniversary of Earth Day in the United States have kicked off with an eco-village on the National Mall and gre

VOA标准英语2013--Skylab-Era Astronauts Reflect on Life Off Earth

Skylab-Era Astronauts Reflect on Life Off Earth Hadfield, who recently wrapped up nearly five months on the space station, has clearly adjusted to life away from Earth. But only four decades ago, scientists didn't know if humans could adapt to long-d

美国国家公共电台 NPR Tiny Fossils Could Be Oldest Evidence Of Life On Earth

STEVE INSKEEP, HOST: We have news this morning about the origin of life. The news is about just how hard it is to find that news. NPR's Rae Ellen Bichell reports. RAE ELLEN BICHELL, BYLINE: Things get hairy when you go looking for the earliest forms

美国国家公共电台 NPR Earth's 'Bigger, Older Cousin' Maybe Doesn't Even Exist

Earth's 'Bigger, Older Cousin' Maybe Doesn't Even Exist AUDIE CORNISH, HOST: Ever since astronomers started to detect planets beyond our solar system, they've been trying to find another world just like Earth. A few years ago, they announced that the

美国国家公共电台 NPR Astronomers Find 7 Earth-Size Planets Around A Nearby Star

AUDIE CORNISH, HOST: Today, scientists announced a big discovery around a star in the constellation Aquarius - seven planets about the size of Earth. And as NPR's Nell Greenfieldboyce reports, they're most likely rocky planets that could be cozy enou

白领英语晨读-019 Heaven on Earth　人间乐土

If you woke pup this morning with more health than illnessyou are more blessed than the million who will not survive this week. 如果你早上醒来的时候健康无恙那么，比起活不过这一周的百万人来说，你真是幸运多了。 If you have never experienced the danger

2018年CRI Restored classic film "Yellow Earth" premieres in Beijing

A 4K restoration of the classic film Yellow Earth premiered this week in Beijing. The film marks China's first success in applying the technology of 4K restoration to classic films. Sun Xianghui is the head of the China Film Archive, which is behind

2006年VOA标准英语-Asteroid Approaches Earth: Destruction or Delig

By Paul Sisco Washington, DC 07 July 2006 watch Asteroid report A major asteroid passed by the Earth this week, and another is heading this way. An asteroid visible in the night sky Asteroids are similar to comets and meteors. But they are larger, m

英语听力：自然百科 地球力场 Earth's Force Field—1

The solar system is a hostile place. Earth is under attack from deadly cosmic radiation. Life here is only possible, because it's protected by the magnetosphere, an invisible force field that cocoons the planet. But new evidence reveals that this vit

英语听力：自然百科 地球力场 Earth's Force Field—18

Earth's magnetic field has reversed thousands of times since its formation 4.5 billion years ago. And scientists now believe that the next reversal is imminent. The race is on to predicting exactly when it will occur. In 2010, the European Space Agen

英语听力：自然百科 地球力场 Earth's Force Field—19

As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get increasingly close to the Earth's surface. As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get

英语听力：自然百科 地球力场 Earth's Force Field—13

Glatsmire's model shows that the magnetic poles swap places spontaneously due to / complex processes within the core. We were used to the idea that a compass points somewhere near the North Pole and hence we can use it for navigation, but there are p

英语听力：自然百科 地球力场 Earth's Force Field—17

We drive them about 20 miles away to the North, and release them, and we track them as they try to fly back home. We drive them about 20 miles away to the North, and release them, and we track them as they try to fly back home. Hes up, OK. Holland wa

英语听力：自然百科 地球力场 Earth's Force Field—14

By analyzing different samples of lava, Herrero / Bervera has built up a picture of how the filed has changed since long before humans were around. They are actually the recorders of the Earth's magnetic field in hundreds of years, thousands of years

英语听力：自然百科 地球力场 Earth's Force Field—7

The loss of the magnetic field has a catastrophic impact on the planet's evolution. Mars becomes the red planet we see today. If earths magnetic protection continues to fade, would it suffer the same fate? If it vanishes completely, the planet might

英语听力：自然百科 地球力场 Earth's Force Field—11

Blockson's computer model reveals that at the South Atlantic Anomaly, the magnetic field isn't just weaker than anywhere else on the planet. It's actually reversed polarity. There is a patch on the core in the South Atlantic where things are not poin