News
- Math
Scheduled random walks skirt collisions
Researchers in theoretical computer science have made progress in settling the question of whether a clairvoyant scheduler can regulate the timing of moves by random walkers on a grid to keep them from ever colliding.
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Protein May Tie Obesity to Diabetes
A newly discovered protein secreted by fat cells could be the link between obesity and type II diabetes.
- Earth
Amazon basin is wetter now than in past
Sediments from the Atlantic Ocean indicate that the now lush Amazon Basin was much drier during the latest ice age.
- Earth
Explorers pinpoint source of the Amazon
A five-nation team of explorers has used Global Positioning System equipment to confirm that the source of the Amazon is a snowmelt-fed stream high in the Peruvian Andes.
