TRAPPIST-1: Good News and Bad News

Posted on Categories Discover Magazine

(Credit: NASA/JPL-Caltech) TRAPPIST-1 opens up an exciting field for astronomers: a small, nearby, compact planetary system with seven Mars- to Earth-size worlds orbiting in days or weeks instead of months and years. What’s more, because their star is small and cool, all the planets may be habitable. Maybe. Two new papers are out on TRAPPIST-1. One makes the chances for life even more ripe, while the other virtually strips away all chances of habitability. The Bad News Let’s step b ...read more

How Much Exercise Does a Body Need?

Posted on Categories Discover Magazine

(Credit: Shutterstock) Researchers keep moving the goal posts on exercise. For a while, the trend was to show benefits of minimal exercise, perhaps as an olive branch to people too busy for a full workout. Lately, the trend is essentially to say effort matters; more exercise means better health. So which is right? Both are. But one overrides standard health guidelines. Health institutions say people need about 150 minutes of moderate or 75 minutes of intense aerobic exercise each week. Moderat ...read more

He thought he had intestinal worms. What he actually had was Chinese food!

Posted on Categories Discover Magazine

Image: Flickr/Roland Tanglao If my body could play an April Fool’s joke on me, my guess it would be this one. Here, a 32 year old patient was horrified to notice “worms” in his poop. And like any sane person would, he carefully fished a sample of the worm-laden poop out of the toilet to bring to his doctor. Given the patient’s travel history, the doctor suspected a hookworm infection, and sent the sample off to the lab. Turns out the “worms” were mung bean s ...read more