Altruism: Genetic or Cultural Evolution?

(PhysOrg.com) -- The origins of altruism, the willingness to make personal sacrifices for the benefit of others often unknown to us, has perplexed evolutionary social scientists and biologists for years.

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 ...

Sympathy for the devil?

Misconceptions about the Church of Satan abound. For many people, anything with the word Satan is synonymous with evil, conjuring up images of gory offerings and babies bred for sacrifice. Nothing could be further from the ...

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