Tomato Plants Can Turn Caterpillars Into Cannibals

Posted on Categories Discover Magazine

A spurge hawk-moth caterpillar. (Credit: Chekaramit/Shutterstock) It’s a twist of fate that wouldn’t feel out of place in a horror movie: A platoon of caterpillars, young and hungry, descend on a defenseless tomato plant to feast, but as they begin to eat something goes terribly wrong. The leaves no longer satisfy, and they turn on each other in a cannibalistic frenzy — feeding wildly until just one, sated and content, remains. You can read it as a Carrie-like ...read more

Lice, crabs, and humans: a tale as old as time… or at least mummies.

Posted on Categories Discover Magazine

Image: Flickr/Mark Strobl Although the best-known mummies are the cloth-wrapped Egyptian variety so often seen in horror movies, many kinds of mummies have been found all over the world. And it’s not only the human bodies that have been preserved during the process of mummification–often human parasites are, too! Scientists can use the presence of parasites on and in mummies to track the history of their association. Here, scientists report finding head and pubic lice on mummi ...read more

Citizen Scientists Diving to Study The Mystery of Manta Rays

Posted on Categories Discover Magazine

This post is part of our Divers’ series. We encourage readers to continue the conversation by adding their own comments, question or concerns on our Facebook page. You’ll find links to other posts at the end of this story.  Two years ago I rang in the New Year by scuba diving with giant manta rays off the coast of Hawaii’s Big Island. It was a bucket list experience I will never forget and one that introduced me to a new form of citizen science. That evening, after en ...read more

The little storm that could: Watch a tenacious tropical depression race ahead of a huge blob of Saharan dust

Posted on Categories Discover Magazine

The GOES-16 weather satellite eyed Tropical Depression Four in the central Atlantic Ocean on Thursday afternoon, July 6, 2017, as it raced ahead of a huge blob of brownish dust streaming off the Sahara in Africa. (Source: CIRA/RAMMB/NOAA) It may have a humdrum name, but since Tropical Depression Four formed in the central Atlantic Ocean on Wednesday evening, it has certainly distinguished itself. It is a “small, tenacious depression” that “has continued to hold its own,&rdquo ...read more

Fun Fact: Praying Mantises Eat Bird Brains

Posted on Categories Discover Magazine

A praying mantis making a meal of a ruby-throated hummingbird. (Credit: “What’s That Bug?”/Randy Anderson) Poor hummingbirds. The fragile, fleet-winged birds often don’t make it past their first year of life as they are tasty snacks for cats, large-mouth bass, snakes, lizards…you get the idea. Now, perhaps surprisingly, we can add praying mantises to that macabre list. A new paper reviewing the avian death-literature finds that praying mantises are enth ...read more