Climate 411

The author of today’s post, Sheryl Canter, is an Online Writer and Editorial Manager at Environmental Defense.

One reason that old-fashioned incandescent light bulbs are such a particularly poor idea in summer is that they put out a lot of heat compared to compact fluorescent light bulbs (CFLs). If you’re air conditioning your home, incandescent lights will require your air conditioner to work harder because you’re basically heating and cooling the room at the same time.

Some people have translated this into the advice that incandescent light bulbs are good in winter because they supplement the heat to your home, making up for the additional energy they draw. I asked James Wang, Ph.D., a climate scientist at Environmental Defense, to calculate whether this was indeed true. His answer was no. Here’s why.

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The author of today’s post, Jeffery Greenblatt, Ph.D., is a scientist at Environmental Defense specializing in low-carbon energy technologies.

Consumers and businesses alike complain that it takes years for savings on energy bills to repay the up-front costs of energy efficiency. No longer. As the Wall Street Journal recently reported, lenders have discovered what energy analysts have known for years: loans for energy efficiency improvements are low-risk, because borrowers can "finance" these loans through lower energy payments.

Energy-efficient mortgages have been available for some time, but lenders didn’t promote them, and customers resisted the extra inspections and paperwork. Now to get home buyers interested, banks are offering incentives of $500-$1000 off closing costs. Everybody wins: consumers save money, lenders make a profit, and the atmosphere enjoys lower carbon emissions.

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The author of today’s post, Michael Oppenheimer, Ph.D., is the Albert G. Milbank Professor of Geosciences and International Affairs in the Woodrow Wilson School and the Department of Geosciences at Princeton University. He also serves as science advisor to Environmental Defense.

"In about a century, some of the places that make America what it is may be slowly erased" by rising sea levels, says an Associated Press news story from last week. In the map of Florida below, some of the most vulnerable areas – which include Cape Canaveral and a big chunk of Everglades National Park – are shown in red.

Source: University of Arizona’s Department of Geosciences.

It’s not just historic sites that are threatened, but people. Rising sea levels could displace millions in heavily populated coastal areas across the world.

Why are sea levels rising, and what do scientists project for the future?

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