If you had to pick between having either a good supply of drinking water or electricity what would you choose? A recently published study revealed that we just might have to make that choice by 2040 unless steps are taken to avert a possible crisis that could jeopardize both water AND energy supplies. We talk with two of the study's main authors. And… It may have taken more than a decade of space travel, but this past week, the European Space Agency's Comet Chaser Rosetta made history when it became the first spacecraft to rendezvous with and orbit a comet. The Ebola virus outbreak in West Africa continues its deadly rampage. Medical experts are now saying that perhaps one of the most important keys in stemming the tide of infections may be education. Thousands of people in Toledo, Ohio were recently told not drink the water. The city's water supply from Lake Erie was polluted with a toxin linked to the overgrowth of algae. While the water in Toledo may again be safe to drink, this problem isn't going away any time soon. Scientists are looking at traditional African medicine for possible treatments for Alzheimer's and Parkinson's disease. The Salk Institute for Biological Studies is analyzing the leaves and bark of a tree that grows on an island nation off the coast of West Africa. We’ll have these stories and more on VOA’s Science, Health and Technology news magazine, Science World.