The giant teeth can reveal clues about pollutants in the Narwhal's diet.
Sinking fish carcasses ferry mercury to the depths of the Mariana Trench.
A new study found toxic chemicals in whales and dolphins.
Each and every planet—and one dwarf planet—in our solar system, represented with the single best image ever taken of it. Say hello to our neighbors.
It's because they're forced to eat human leftovers.
Excerpt: Vacation Guide to the Solar System.
And still has a hot core
Blame it on your mom
The toxic metal is invading the food chain
Plus, the coolest tech in the Marvel Universe
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