Our ancestors branched off from those of chimpanzees some six million years ago. Since then, our lineage became human–and distinctly unlike other apes. Figuring out how that difference evolved is one of the grand challenges of biology. Until now, scientists have gotten most of their clues by looking at the fossils of extinct hominids. These fragments of bones only preserve a little information, but it’s not a random smattering of data. It’s more like a scaffolding on which other clues can be fixed, so that a picture of how we became human can gradually emerge. That’s because the changes documented in the fossil record were ultimately created through the evolution of our genome.
Author: admin
In February I wrote an article in Popular Science about a project to implant electrodes in a monkey’s brain allowing the monkey to control a robot arm with its mind. The goal of this work is to let paralyzed people operate prosthetic limbs by thought alone. Now the research team has announcedanother big step in that direction: their first work on humans.
Attention Virginian readers of the Loom: I’ll be heading to warmer climes later this week to speak in Charlottesville at the Virginia Festival of the Book.On Thursday at 4 I’ll be speaking on a panel about science and society. On Friday at 4 I’ll be speaking again on scientific discoveries and how they change us. I’m looking forward to listening to my fellow panelists, who include Robin Marantz Henig and James Shreeve. See you there.
I’ve posted a new batch of reviews for Soul Made Flesh on my web site. The newest is from Ross King, the author of Brunelleschi’s Dome and Michelangelo and the Pope’s Ceiling. His review in yesterday’s Los Angeles Times is a rare sort–he likes the book (which he calls “thrilling”) for what the book really is, rather than as a projection of some phantom in his own mind.
Last week I wrote about an important new study showing that three very different groups of species–plants, butterflies, and birds–have all been declining at the same alarming rate for over 40 years in Great Britain. The authors concluded that if the pattern is global, it may mean that we are entering one of the biggest bouts of mass extinctions in the past 500 million years.