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Soil Testing to Ensure Safe Gardening
Before sowing carrot and kale seeds, many city-dwelling green thumbs may wonder whether the food they will harvest from their urban plots is truly safe to eat.
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Match Day 2013
Each year in March, medical students across the nation participate in a half-century-old tradition that brings tears of joy or sadness to those involved: Match Day.
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Explaining Metamaterials
We live in a world of waves. The radio waves hitting your car’s antenna and the light coming in through its windshield, the X-rays that can detect a tumor and the gamma radiation that can destroy it are all different facets of the same phenomenon: electromagnetism. As one of the fundamental forces of nature, its imprint can be felt on almost everything in the universe.
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Robotic Boats to the Rescue
Imagine sailing a container ship to help with cleanup at the site of a massive oil spill. Now imagine if each container were actually an autonomous robotic boat.
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A “Passport” for the Immune System
The body’s innate immune system is its first line of defense against invaders. A disease-causing bacterium or a piece of wood from a splinter are treated the same: Cellular agents of the immune system identify these objects as foreign and try to destroy them.