In Brief, June 2008

Join Our Community of Science Lovers!

CHARRED FOR LIFE

In the heart of the Amazon River basin 1,500 years ago, tribes mixed soil with charcoal derived from animal bone and tree bark to boost their crop yields. Now scientists conclude that such burned, dead matter fertilizes better than compost and animal manure, helping to transform the soil into the richest earth in the world. The “biochar” also profoundly enhances soil’s natural ability to seize carbon, thereby trapping greenhouse gases. Delaware State University researchers presented their findings April 10 at a national meeting of the American Chemical Society.

—Charles Q. Choi

On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.

TURNING POLLUTION INTO DVDs

New procedures could turn carbon dioxide (CO₂) from coal-fired power plants and other sources into polycarbonate, a type of plastic derived from petroleum and used to make DVDs and eyeglass lenses. Strategies that rely on catalysts have used CO₂ to make polymer precursors to polycarbonate. Although the chemical reactions produce only water as a waste product, they require high temperatures and pressure. Hence, the processes would only pay off environmentally if clean-energy sources, such as solar or wind power, were used to fuel them.

—David Biello

STARVED FOR BETTER CHEMO

Fasting for 48 hours before receiving chemotherapy could limit the treatment’s toxic effects on healthy cells while leaving cancer cells vulnerable. When normal cells are starved, the cells shift into survival mode, revving up repair mechanisms and protective processes. Researchers starved mice that had been injected with malignant cells; then they gave the rodents megadoses of chemotherapy. The animals lost weight, but once treatment ended, they regained it—and their energy. The finding, which stemmed from research on aging, may pave the way for higher and more frequent chemo doses that do not harm normal cells.

—Nikhil Swaminathan

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American