john hawks weblog

paleoanthropology, genetics and evolution

Don Johanson

  • A Lucy remembrance

    Sat, 2011-09-10 13:12 -- John Hawks

    The CNN medical blog (associated with Sanjay Gupta) is running a short piece by Don Johanson, which may be of interest: "'Lucy' discoverer: Why I study human evolution".

    My deep commitment to understand the origins of humankind was ignited when I read Thomas Henry Huxley’s 1863 book "Man’s Place in Nature." The core idea that gripped my teenage mind was the suggestion that humans and African apes shared a common ancestor that roamed Africa millions of years ago.

    I think if you're a teenager reading Huxley, you're already in the right tail of the distribution for "human evolution interest"!

  • AMNH Leakey-Johanson event

    Wed, 2011-05-04 16:24 -- John Hawks

    The American Museum of Natural History has arranged an event featuring Richard Leakey and Don Johanson, which is happening tomorrow evening: "Human Evolution and Why It Matters: A Conversation with Leakey and Johanson".

    Celebrating decades of groundbreaking exploration in East Africa, renowned paleoanthropologists Donald Johanson and Richard Leakey will share the stage to discuss the overwhelming evidence for evolution in the hominid fossil record and why understanding our evolutionary history is so important.

    Known for such landmark discoveries as "Lucy" (Johanson) and "Turkana Boy" (Leakey), the work of these two scientists has produced much of the fossil evidence which forms our understanding of human evolution.

    Looking back over careers spanning 40-plus years, these men will share the stories behind their monumental finds and offer a look at what's ahead in human evolutionary research.

    AMNH site will be live-streaming the event, starting at 6:30 pm EDT, Thursday, May 5.

    A "student town hall event" with the two scientists speaking to students from five schools was scheduled to be held today.

    Virginia Morell described what happened the first time the two men met in AMNH, on that occasion moderated by Walter Cronkite. It's such an interesting story! I find it exceptional that they are reprising the event.

  • Mooning hominins

    Tue, 2010-07-13 15:19 -- John Hawks

    Gretchen sends this link: MSNBC has a list of "Eight Great American Discoveries in Science".

    We both agree that the list isn't really "science" so much as "technology and science" -- otherwise, why would "U.S. collaboration leads to the Internet" be on the list?

    But along with Ben Franklin and Thomas Hunt Morgan, and right after the moon landing we have ....

    ARDIPITHECUS!

    Ardi joins Lucy in the annals of American science

    American paleoanthropologist Donald Johanson's 1974 discovery of Lucy, a 3.2 million-year-old hominid named Australopithecus afarensis that walked upright, is often considered one of the greatest scientific discoveries in the field of human origins. The discovery of a 4.4 million-year-old hominid known as Ardi, short for Ardipithecus ramidus and described in a series of paper in 2009, may be an even bigger scientific breakthrough, according to Rothenberg.

    Ardi lived in woodlands and climbed on all fours in the trees, but was also capable walking on two feet — suggesting that this hallmark of human evolution occurred in the forest, not grasslands as previously believed. The discovery team, headed by Tim White of the University of California of Berkeley, said Ardi may be ancestral to Lucy. Such findings have brought scientists closer to identifying the common ancestors of chimpanzees and humans.

    Well, I'm glad that paleoanthropology made the list at all. But Johanson and White would be the first to remind MSNBC that these aren't just "American" discoveries -- both the discoveries and the science to understand them has been done by international teams working in Ethiopia.

  • Don Johanson interview

    Tue, 2009-02-10 23:14 -- John Hawks

    Alan Boyle, who writes the "Cosmic Log" feature for MSNBC, has a long interview with Don Johanson. It's a nice read, which touches on many paleoanthropological topics as well as Johanson's soon-to-be-released book with Kate Wong, Lucy's Legacy: The Quest for Human Origins:

    Cosmic Log: What do you think? Would [this museum exhibit] blow Darwin's mind?

    Johanson: Well, first of all, there are a couple of things that would trickle through his mind immediately. One of them is the fact that Lucy is sort of an amalgam: long arms, small brain, but yet bipedal. ... One of the things that Darwin stressed in his model of human evolution was the acquisition of upright walking. We still think that may be the first distinguishing feature that separated us from a common ancestor with the chimps. He would be gratified to see that.

    But he would be mostly gratified when he read that Lucy was 3.2 million years old - because that was one of the things that Darwin struggled with, almost more than anything. We all face it today: We need more time, we need more time. For example, you're taking an exam as an undergraduate, and it's time to turn in the exam. But Darwin really meant it: He needed time, and that really bugged him. The world had to be old for all this to have happened for him. So, how gratified would he be that his predictions turned out to be correct?

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Neandertals

For years, I've worked on their bones. Now I'm working on their genes. Read more about the science studying these ancient people.

Denisova

From a finger bone of an ancient human came the record of a completely unexpected population. My lab is working on the science of the Denisova genome.

Acceleration

The advent of agriculture caused natural selection to speed up greatly in humans. We're uncovering some of the ways that populations have rapidly changed during the last 10,000 years.

Malapa

Just outside Johannesburg, the Malapa site is producing some of the most exciting finds in human evolution. This site is the headquarters of the Malapa Soft Tissue Project.