A New, Somewhat Moldy Branch On The Tree Of Lifehide captionTwo cells — one marked mostly in green, the other in blue — of a newly discovered organism found in water samples collected from the University of Exeter pond. Scientists think these "cryptomycota" use their tails to propel themselves while searching for food. Meredith Jones/Nature If you think biologists have a pretty good idea about what lives on the Earth, think again. This comes as a big surprise. "We thought we knew what about the major groups that existed," says James, who is curator of fungus at the University of Michigan. Many fungi are already familiar. Biologists figure they've probably only cataloged about 10 percent of all fungal species. Oops. "But the reality is most of the diversity of life we can't grow in a laboratory. And microscopic organisms are just about impossible to find just looking at dirt or water through a microscope. "About 10 years ago, people started using molecular approaches," he says. Using those techniques, they struck pay dirt.
Richard Feynman: Physics is fun to imagineLoading … Comment on this Talk 138 total comments In this archival footage from BBC TV, celebrated physicist Richard Feynman explains what fire, magnets, rubber bands (and more) are like at the scale of the jiggling atoms they're made of. One of the best known and most renowned scientists in history, Richard Feynman pioneered quantum mechanics. 13 Way, way out there Curated by TED Travel across the universe (or is it universes?) What to Watch Next Murray Gell-Mann: Beauty, truth and ... physics? 16:02 Posted: Dec 2007 Views 884,787 | Comments 139 What Your Friends are Watching Related Topics We want you to share our Talks! Just follow the guidelines outlined under our Creative Commons license.