Science Daily

• Amazon study reveals the best strategies for protecting biodiversity and carbon

  A large Amazon study suggests the most powerful conservation move may be protecting the forests that are already standing. Preventing damage from wildfires and logging delivered the greatest biodiversity benefits and nearly matched deforestation prevention for protecting carbon. Restoration remains important, particularly where forests have already been heavily cleared, but it was more expensive and less effective on its own.

• Hurricane Hunters reveal 4 warning signs that a storm is about to strengthen

  Nearly three decades of Hurricane Hunter data reveal four features that can help a tilted tropical cyclone straighten its circulation and become capable of intensifying. The findings could give forecasters an earlier warning that a seemingly disorganized storm is becoming primed to strengthen.

• Scientists may have solved a 2,000-year-old Dead Sea Scrolls mystery

  Researchers may have solved a long-running mystery surrounding the Dead Sea Scrolls by proposing that the Qumran sect really did use its distinctive 364-day calendar. Its perfectly ordered 52-week system kept holidays on the same weekdays, but it slowly drifted out of sync with the seasons because it was shorter than the true solar year.

• Scientists discover a hidden “ID card” in cat urine

  Cats may identify one another through a surprisingly durable chemical “calling card” made from 13 unusual fatty acids in their urine. The compounds appear linked to mysterious fat droplets in the kidneys and may represent a scent-recognition system shared across the cat family.

• A 66-million-year-old tooth reveals T. rex was nearly as warm as a human

  Chemical clues preserved inside fossilized T. rex teeth reveal that the dinosaur maintained a body temperature of about 97 degrees Fahrenheit, almost identical to humans. The finding provides direct evidence that the giant predator was warm-blooded, helping explain how it stayed active and survived in chilly environments as far north as Alaska.