Uncategorized
- Health & Medicine
Better-Off Circumcised? Foreskin may permit HIV entry, infection
Circumcision seems to offer partial protection against HIV infection, but not other sexually transmitted diseases.
- Animals
Long Horns Win: Selection in action—Attacks favor spike length for lizards
A hunting bird's quirk—a tendency to impale prey on thorns—leaves a record that has allowed scientists to catch a glimpse of an evolutionary force in action.
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It should have come as no surprise that the rat’s DNA had “changed much more than the human genome had since the two species diverged from a common ancestor” considering how many more breeding cycles the rat has experienced since that time.
