Tag Archives: GROW

A Real-Life Body Clock

GROW

A blood test says you’re aging too fast. Now what?

HOLLY MANN remembers a time — it must have been twelve years ago — when she started feeling old. Then 27, the US Army veteran found that she could no longer comfortably exercise. She was sapped of energy, and carried pain in her shoulders, hip, knees, and wrists. “I had a lot of issues that I would frankly associate with somebody who was two decades older than me,” she says. The doctors said that her symptoms stemmed from months of undetected carbon monoxide poisoning. They couldn’t tell her any more than that. Ms. Mann was desperate to feel better — really, she says, to feel younger.

Consulting the internet, she started tinkering with her diet. She tried new workouts. She ordered capsules of Vitamin This and Supplement That. And a few years in, after incremental ups and downs, she started to see real improvements. Though she still faced her share of low-energy days, by 2020, Mann felt noticeably better. She was curious: how much better? Had she, possibly, turned back the hands of time?

Read the full story in GROW

When Robots Multiply

GROW

These scientists created living robots out of frog cells. Now these “Xenobots” are reproducing.

IT WOULD PROBABLY have been the science story of the year—any other year. In January 2020, a team of biologists, roboticists and computer scientists announced that they had created the world’s first living robots. These Xenobots were cells culled from a frog, sculpted with the help of an evolutionary algorithm, and then set free to roam under the microscope. Liberated from the constraints of frogness, these cells had designs of their own. They collaborated. They interacted. They performed basic tasks. And eventually, in more recent experiments, they started to multiply.

This is the team’s latest revelation: Xenobots can autonomously assemble identical copies of themselves from individual cells floating in the spring water around them.

Read the full story in GROW.