Imagine if our bodies could grow new organs throughout our entire lives. Plants do this constantly, thanks to tiny, powerful reservoirs of stem cells. But how do these cells know when to divide, and ...

The border between Poland and Belarus is a land of forests, rolling hills, river valleys, and wetlands. But this once peaceful countryside has become a militarized zone. Prompted by concerns about an ...

Scorpions aren’t the only bug that bedevils people in the Valley. Arizona also is filled with termites. According to Brad Olsen, owner of Urban Desert Pest Control in north Phoenix, there are 20 to 40 ...