Climate change could alter ocean food chains, leading to far fewer fish in the sea

Climate change is rapidly warming the Earth and altering ecosystems on land and at sea that produce our food. In the oceans, most added heat from climate warming is still near the surface and will take centuries to work down into deeper waters. But as this happens, it will change ocean circulation patterns and make ocean food chains less productive.

Washed Up Killer Whale Is Most Polluted Animal On Earth

A dead killer whale that washed up on the shore of a Scottish island last January was the most polluted animal ever seen on Earth, according to a newly released report. The whale had the highest levels of polychlorinated biphenals, or PBCs, ever recorded in an animal, according to the Scottish Marine Animal Stranding Scheme. An…

Read moreWashed Up Killer Whale Is Most Polluted Animal On Earth

We need phosphate to grow food. But should we be digging it up from the sea floor?

Biologist Jeanneht Armendáriz Villegas of Baja’s Instituto Politécnico Nacional, who studies mines in protected areas, says there are a lot of unknowns about drilling underwater, but some things are understood.

Phosphorous deposits often come with dangerous contaminants like uranium and cadmium, Armendáriz says. Plumes generated from dredging can affect whole aquatic ecosystems.

Read moreWe need phosphate to grow food. But should we be digging it up from the sea floor?