The Lord Howe stick insect is officially back from the dead

It’s a rare triumph when a species comes back from the dead. A new genetic analysis has officially established what many entomologists and conservation biologists hoped was true: The Lord Howe stick insect (Dryococelus australis) lives. Nicknamed “tree lobsters,” the dark-brown crawlers are nocturnal, flightless creatures that can grow up to 15 centimeters long. They […]

Remembering Joe Polchinski, the modest physicist who conceived a multiverse

Modesty is not a quality often found in abundance in physicists. Maybe that’s because Joe Polchinski had all of it. Substantial ego is arguably a necessary qualification for anyone attempting to wrest nature’s deepest secrets from their mathematical lairs. And in many cases, ego seems proportional to the magnitude of a physicist’s accomplishments. But if […]

In a pack hunt, it’s every goatfish for itself

The only fish known to hunt with wolf pack moves may not be true team players, just lemon-yellow me-firsts. Yellow saddle goatfish (Parupeneus cyclostomus) do more than school together as they dart over Indo-Pacific coral reefs. Like wolves, the goatfish take different roles in a pursuit. One or two fish may rush straight toward prey […]