Stress test: New study finds seals are stressed-out by sharks

While a little added stress may be helpful to flee a dangerous situation, or to meet an approaching deadline, it's no secret that prolonged exposure to the stress hormone cortisol is linked to health problems. So, what effects ...

Coral gardening is benefiting Caribbean reefs, study finds

A new study found that Caribbean staghorn corals (Acropora cervicornis) are benefiting from "coral gardening," the process of restoring coral populations by planting laboratory-raised coral fragments on reefs.

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