This Week in Science: July 6-12

Pathological rodent teeth are fascinating and terrifying.

Why do most male mammals have external testicles?

Choirs match their voices and their heartbeats.

Can you have babies in space?

The marks left by insects on the fossils from the La Brea Tar Pits can help scientists determine when and how these animals died.

Scientists found a 23 million year old lizard encased in amber.

Paleoecology is still alive and well.

Why you should sniff trees.

Science communication and fossil preparation.

Sperm are the cheetahs of the microscopic world”.

Some bodies are never identified.

You are actually living in the past.

What if everyone was psychic?

Emotions and facial expressions might not actually be universally linked.

Glass sponges are taking over the Antarctic.

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