Defying expectations, solar activity is back in a big way, with the number of sunspots counted on the Sun’s surface last month reaching levels not seen in nearly 23 years, more than twice the number predicted by previous forecasts. This newfound activity signals not only that the Sun is wellread more

A key component of space travel in science fiction has taken a major step to becoming reality with an experiment that has successfully induced suspended hibernation in lab rodents. Instead of using potentially dangerous methods such as chemically-induced sleep or freezing the subjects, the technique involved uses ultrasound to lullread more