Mexican experts find ancient blood on stone knives

(AP) - Traces of blood and fragments of muscle, tendon, skin and hair found on 2,000-year-old stone knives have given researchers the first conclusive evidence that the obsidian blades were used for human sacrifice so long ...

Immortal worms defy aging

Researchers from The University of Nottingham have demonstrated how a species of flatworm overcomes the ageing process to be potentially immortal.

Researchers achieve major breakthrough in cell reprogramming

(PhysOrg.com) -- A group of Harvard Stem Cell Institute (HSCI) researchers has made so significant a leap forward in reprogramming human adult cells that HSCI co-director Doug Melton, who did not participate in the work, ...

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