Dear EarthTalk: What are “smoke waves” from wildfires and how can they be hazardous for our health? -- Doug Jenkins, Big Sandy, TX
Smoke waves are just what they sound like:
Editor:
I applaud your commentary article on the melting of the polar ice cap. The authors did an excellent job of explaining the effects of global warming. Hopefully articles like
Dear Earthtalk: The holidays can be so wasteful. What are some ways we can green our celebrations this year? - Belinda McHugh, Los Angeles, CA
Sipping eggnog, listening to carols by
Dear EarthTalk: What's the latest in cutting-edge, hyper-efficient solar cells? Are we really moving beyond huge photovoltaic panels anytime soon?
- Michael Williams, Hartford, CT
Many people
Dear EarthTalk: Are green groups using the campaign finance system like other “special interests” through Political Action Committees (PACs) or otherwise?
- Wilson McClave, Washington, DC
As a matter of fact,
Dear Earthtalk: Is recycling still worthwhile given the expense and emissions associated with it?
- Michael Vitti, Norwalk, OH
Americans generate about 254 million tons of trash and recycle and compost
Dear Earthtalk: I've heard that making and installing concrete takes a big toll on the environment. What's being done to clean up this industry?
- Jenn Chadwick,
Dear EarthTalk: What's the difference between a carbon tax and "cap-and-trade" system for reducing greenhouse gas emissions?- Marina Brown, New York, NYMost of us
Dear EarthTalk: Do scientists have any idea why so many whales are dying in the Gulf of Alaska lately? - Michelle DiCostanzo, New York, NY
Over the past four months, 33
Dear Earthtalk: Are the California redwoods in danger because of the drought?
- Jesse Pollman, Seattle, WA
California is home to two of the three redwood tree species: coast redwoods and
