earth Channel
- Population, biodiversity interaction is 'complicated business'
May 09, 2008
Population expert Joel Cohen talks about the “complicated busisness” that’s the interaction between Earth’s rising human population and our planet’s biodiversity.
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- What will it mean to live in an urban world?
May 06, 2008
Earth is becoming more urbanized, according to the United Nations. Hear demographer Carl Haub talk about what ‘urban’ really means.
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- Research ship drills for earthquakes
May 01, 2008
Scientists have drilled closer than ever into an active quake zone off the coast of Japan. Did they learn anything earth-shaking?
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- Ten-second earthquake warning
Apr 30, 2008
The USGS estimates a 99 percent chance of a major earthquake striking California within the next 30 years. Berkeley’s Richard Allen talks about an earthquake warning system.
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- Human space travel, or focus on Earth?
Apr 26, 2008
We have the technology for human space travel. But it’s more important to direct resources toward studying climate change here on Earth, says Frank Wentz of Remote Sensing Systems in Santa Rosa, California. Here’s why he thinks so.
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- Water below Antarctic ice might harbor life
Apr 02, 2008
Mysterious microbes might be lurking beneath Antarctica’s ice sheets. Oceanographer Chuck Kennicutt is interested in how organisms would make a living out of these cold, dark environments, and believes that the discovery and analysis of such microbes could shed light on how life evolved on our planet.
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Ask a Scientist
- What makes oceans and lakes look blue or green?:
When you cup water in your hand, it’s colorless.
- How are geodes formed?:
… and how do you open a geode without damaging the crystals inside?
- What does 'sunrise time' mean?:
Does it mean the time the sun rises beyond the horizon?
- What's the difference between a mirage and an illusion?:
I was driving in the country on a hot day and I noticed that the road seemed wavy and shimmery like water. Was this a mirage? What causes it? Is it just an illusion?
- Is twilight shorter at the equator?:
… and longer at the poles of Earth?
- How did the sand in the desert get there?:
Finding the exact origin can be difficult.
Blogs In Earth Category
Why the Myanmar cyclone was so deadly
by Dan KulpinskiCyclone Nargis decimated part of Myanmar from May 2-4, its huge rains and storm surge flooding the Irrawaddy River delta, killing at least 22,000 people and leaving twice as many…
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NASA's astronomy pictures of the day
by Beverly SpicerThis photo of a total solar eclipse in Antarctica was taken in 2003 by an adventurous soul named Fred Bruenjes of moonglow.net. His photo and others of similar fascination…
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- Carbon dioxide, methane on the rise
by Dan KulpinskiA new report from the National Oceanic and Atmospheric Administration (NOAA) is not surprising, but it is important: Global levels of carbon dioxide and methane both increased sharply in…
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If Daylight Saving Time wasn't bad enough...
by Larry SessionsThere is so much controversy over Daylight Saving Time -- who benefits?, does it really save energy?, is it worth the hassle? -- that maybe we should dump it altogether…
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- China's growth brings in more invasive species
by Dan KulpinskiAs China prepares for the many Olympic athletes and tourists that will visit this summer, it's already hosting some uninvited Olympic guests: invasive species. …
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