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Upmanu Lall speaks of groundwater crisis for India
Upmanu Lall explained that India has been using groundwater to support agriculture for its growing population. By 2025, many parts of India could run out of groundwater.
September 7, 2009
Reflective crops may curb global warming
How leaves are arranged in the canopy can make a big difference as to how much sunlight is reflected back from the reflective crops.
September 7, 2009
Greg McPherson on the Tree Carbon Calculator
You might know that trees help take carbon dioxide out of the atmosphere. But you probably don't know how much carbon a particular tree in your front yard is storing in its roots and branches. Greg McPherson tells EarthSky how to find out.
September 7, 2009
Watching climate change before my eyes
Here in the U.S., despite what the majority of scientists say, people are still arguing about whether climate change is real. Meanwhile, I'm watching my local climate change profoundly.
September 5, 2009
World population: 7 billion on the horizon
Global world population numbers are on track to reach 7 billion in 2011, just 12 years after reaching 6 billion in 1999.
September 2, 2009
Are nano-materials in sunscreens worth the risk?
Let the buyer beware. If your sunscreen goes on clear, it contains manufactured nano-particles and don't keep you safe from the sun.
August 31, 2009
Denise Bode has high hopes for American windpower
Denise Bode talks about the environmental and economic benefits of windpower, and urges the U.S. to adopt a national renewable electricity standard.
August 31, 2009
Science teachers in schools are dissatisfied
The current shortage of math and science teachers in the United States appears to be driven by the dissatisfaction of the teachers already on the job.
August 31, 2009
Marc Goldyne uses technologies to deliver medical care
Marc Goldyne uses his computer to work with patients who live hundreds of miles away. He practices what's called telemedicine.
August 31, 2009
Marcus Eriksen describes ocean plastic garbage
Marcus Eriksen calls it a "soup" of plastic, created by debris that leaves coastal watersheds, washes out to sea, and gets stuck in the ocean.
August 31, 2009
