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The problem  THE GREENLAND AND Antarctic ice sheets are melting at an accelerating rate, and we’re not sure how that melting is going to change in the future. Ice sheets are a metre stick for climate change, but measurements of the Greenland ice sheets’ past changes are in disagreement with physical models. In fact, models …

The problem A FEW YEARS ago there was a worldwide hike in food prices because the United States made incentives for making biofuels—gasoline with ethanol, an environmentally friendly alternative to regular gas—attractive. The need for biofuels is clear, but how do we tell if manufacturers are actually making fuel from crops and not just repackaging …

Troubles with texting The problem LOOK AT THIS article. Now at your phone. Now back to this article. Chances are, you have plenty of text messages saying something like, “OMG, ttyl, g2g”—or at least that’s what some people might expect. Expectations aside, there isn’t much scientific knowledge surrounding texting habits. Texting is private, and finding …