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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
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
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
Klaus Schulten on how birds navigate
Biophysicist Klaus Schulten says that when they can't navigate by physical landmarks, such as in extreme weather or flying over oceans, birds use a sort of internal compass - a light-sensing protein, located in only one eye of the bird.
August 24, 2009
Michael Macrander of Shell monitors Alaskan Wildlife
Getting to oil and gas in the deep oceans near Alaska requires a higher degree of operating sensitivity, says Michael Macrander.
August 24, 2009
Skip Walker on satellite observations of Arctic greening
Skip Walker, a geobotanist at the University of Alaska, told us that satellite data shows the Arctic is 'greening.'
August 24, 2009
Greg McPherson on urban forests built to last
"They are recognized as having tremendous potential to improve the quality of life in our cities and to improve our health and well-being," Greg McPherson said.
August 24, 2009
Ken Caldeira on whether to alter climate on purpose
Climate scientist Ken Caldeira told EarthSky that we might have already failed at cutting emissions in time to prevent a climate crisis.
August 17, 2009
Sandra Postel says dams can be made to serve humans and ecosystems
To boost the health of freshwater life, Sandra Postel advocates trying to mimic the natural flow patterns of rivers before the dams were built.
August 17, 2009
