The idea of spewing sulfur particles into the stratosphere to counter global warming just seems wrong on the face of it. It’s a little like trying to rescue a recipe gone horribly wrong. New ingredients might mask that accidental spice overdose, but the odds of ending up with something resembling what you set out to make are slim.

First we found out that if we tried this form of geoengineering we could never stop. Now a study shows that the process would trash the ozone layer in the Arctic and delay the recovery of the Antarctic ozone hole by 30 to 70 years.

I’ll keep you updated.

Computers are great for simulating and analyzing evolution, and now they’re also good for directing it. A nifty experiment combined a computer with a microfluidic chip to evolve a population of enzymes. In a sense, evolution becomes just another computer program.

How fast do you make a decision? It might be faster than you think.

It looks like your brain does the deciding before your mind makes itself up. A study using functional magnetic resonance imaging found that people’s brains cue up decisions as much as 10 seconds before people think they’ve made them.

This site doesn’t have a lot to do with science, but it’s pretty cool. Click to change, space to clear.

The skin is certainly a sensitive instrument, but a chemical sensor? Scientists have found that mice sense oxygen levels through their skin, and it’s possible that we do too. When oxygen levels are low, mice increase the production of red blood cells to boost their bodies’ oxygen processing efficiency. Boosting red blood cell production is a treatment for a range of diseases, and the study could eventually leads to better ways of doing so.