What’s the difference between carbon tax and ‘cap-and-trade’?

Dear EarthTalk: What’s the difference between a carbon tax and “cap-and-trade” system for reducing greenhouse…


Why are so many whales dying in the Gulf of Alaska?

Dear EarthTalk: Do scientists have any idea why so many whales are dying in the…


Can solar desalination help a thirsty world?

Dear EarthTalk: What exactly is solar desalination and how can it help an increasingly thirsty…


Earth Talk: How can my company cut back on paper?

Dear EarthTalk: My company talks the talk when it comes to the environment but could…

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