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Podcast: 400-year-old sharks, busting a famous scientific hoax, and clinical trials in pets

Science Podcast
News stories on using pets in clinical trials to test veterinarian drugs, debunking the Piltdown Man once and for all, and deciding just how smart crows can be, with David Grimm.   From the magazine It’s really difficult to figure out how old a free-living animal is. Maybe you can find growth rings in bone or other calcified body parts, but in sharks like the Greenland shark, no such hardened parts exist. Using two different radiocarbon dating approaches, Julius Neilsen and colleagues discovered that the giant Greenland shark may live as long as 400 years.   Read the research.   [Image: James Howard McGregor/Wikimedia Commons/Music: Jeffrey Cook]


Sarah Crespi

Sarah Crespi is the Senior Multimedia Producer at Science and host of the Science Magazine Podcast.

David Grimm

David is the Online News Editor of Science.

Julius Nielsen

Marine Biological Section, University of Copenhagen, Strandpromenaden 5, 3000 Helsingør, Denmark.
Greenland Institute of Natural Resources, Post Office Box 570, Kivioq 2, 3900 Nuuk, Greenland.
Den Blå Planet, National Aquarium Denmark, Jacob Fortlingsvej 1, 2770 Kastrup, Denmark.
Department of Arctic and Marine Biology, UiT The Arctic University of Norway, 9037 Tromsø, Norway.