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

发表于:2018-12-07 / 阅读(89) / 评论(0) 分类 (科普英语)Earth and Sky

Greatest Brilliancy 金星光辉最大之时 The planet Venus now shines as a eerily brilliant light low in the western twilight sky. We'll talk about why Venus appears at greatest brilliancy this week -- on today's Earth and Sky. DB: This is Earth and Sky

发表于:2018-12-07 / 阅读(67) / 评论(0) 分类 (科普英语)Earth and Sky

Paris Conference to Discuss Climate Change, Rising Oceans Some of the world's leading experts on oceans and climate change are meeting in Paris this week to discuss why oceans are rising, and where to channel scarce research funds to study the pheno

发表于:2018-12-07 / 阅读(78) / 评论(0) 分类 (科普英语)Earth and Sky

Water Cycle 水循环 All the oceans on earth are salty, while inland water is typically fresh. How does water become salty? We'll answer a listener's question -- today on Earth and Sky. DB: This is Earth and Sky. We recently visited the Austin Childr

发表于:2018-12-07 / 阅读(110) / 评论(0) 分类 (科普英语)Earth and Sky

Plants vs. Insects 植物和昆虫 New research is shedding light on one of the longest running battles of all time -- the war between plants and insects. Plants may seem helpless, but they have complex chemical defenses. Plants vs. insects -- today on E

发表于:2018-12-07 / 阅读(61) / 评论(0) 分类 (科普英语)Earth and Sky

Which of these politicians would you vote for? Theyre the same, right? Not exactly. In an experiment, Danish Researchers modified the real face to make it look more dominant or more feminine. Those subtle changes made a difference, says Princeton Uni

发表于:2018-12-08 / 阅读(58) / 评论(0) 分类 VOA标准英语2018年(十月)

Global Warming and Ozone 全球变暖和臭氧 Could the coming century bring a new threat to the ozone layer? Discover one scientist's model of the effect of global warming and greenhouse gases on ozone -- on today's Earth and Sky. DB: This is Earth and S

发表于:2019-01-02 / 阅读(156) / 评论(0) 分类 (科普英语)Earth and Sky

Moon and Jupiter 月球和木星 After traveling behind the sun for several months, the planet Jupiter is now visible again, just before sunup. Learn how to see Jupiter near the waning moon on Wednesday morning -- on today's Earth and Sky. JB: This is Ea

发表于:2019-01-02 / 阅读(145) / 评论(0) 分类 (科普英语)Earth and Sky

Plant Signals 植物的语言 Can plants smell and taste in the same way that animals do? Can they talk to each other and to insects? Learn how scientists hope to unravel some of the mysteries of plant senses -- on today's Earth and Sky. JB: This is Eart

发表于:2019-01-02 / 阅读(153) / 评论(0) 分类 (科普英语)Earth and Sky

Aqua Technology 水资源监测科技 A new weather-monitoring satellite has been 30 years in the making, and some researchers think it's worth the wait. We'll speak with a scientist about the Aqua satellite -- on today's Earth and Sky. DB: This is Earth a

发表于:2019-01-02 / 阅读(147) / 评论(0) 分类 (科普英语)Earth and Sky

Harvest Moon 秋分前后之满月 Right now, as seen from the northern hemisphere, the ecliptic -- or path of the sun, moon and planets -- makes a narrow angle with the evening horizon. Learn more about the ecliptic -- and the Harvest Moon -- today on Ear

发表于:2019-01-02 / 阅读(150) / 评论(0) 分类 (科普英语)Earth and Sky

Sierra Treeline 山脊树林 Could global warming allow forests to expand into higher elevations than they have reached in more than a thousand years? Learn more about studying alpine treelines -- today on Earth and Sky. JB: This is Earth and Sky. The h

发表于:2019-01-02 / 阅读(157) / 评论(0) 分类 (科普英语)Earth and Sky