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...
Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod...
Estrogen Mimics 雌性激素 It may not surprise you that pollution from chemical plants and farms can harm fish. But there's growing evidence that we're all hurting fish and frogs by what we flush down the drain. Discover estrogen mimics -- today on Ea...
King of Beasts 狮子 Even skywatchers connect lions with royalty. For example, the brightest star in the constellation Leo the Lion is called Regulus -- which means little king. Discover why lions are said to be the king of beasts -- today on Earth a...
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...
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...
Forests and CO2 森林和二氧化碳 The amount of fossil fuel emissions released into the atmosphere has steadily risen since the Industrial Revolution. But recently, part of those emissions have been disappearing. Learn more about forests and CO2 -- on...
Amazon GIS 亚马逊地理信息系统 In the Amazon, there's a growing human population in a region that also contains 30% of Earth's total plants and animals. Learn how scientists have put together an Internet window to the Amazon -- today on Earth and Sky...
Moon and Venus月球和金星 The planet Venus is now low in the west after sunset. It's not up for long after the sun goes down, but it's very, very bright. Learn how to see Venus tonight near Earth's companion moon -- today on Earth and Sky. JB: This i...
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...
