Clams That Live For 500 Years Just Tipped Off Scientists That Atlantic Ocean Currents May Be Approaching A “Tipping Point”

These modest mollusks don’t look like much, but their shells tell a staggering story as they store a record of the environmental conditions across their lifespan. For quahog clams, that can be as long as 500 years, and now scientists have figured out... [2757 chars]