Here are the top environmental links folks are Digging today:

The Independent: "Row over scheme to 'fertilise' oceans"

— Dumping 20 tons of iron sulphate into the Southern Ocean is an extreme way to combat global warming, and to a growing contingent of scientists and politicians, it's too extreme. That may still not stop an international team of scientists from doing it, hoping the chemical will trigger a huge, carbon-trapping algae bloom that will sequester the greenhouse gas deep in the ocean. Critics point out we don't know what else will happen.

• EcoWorldly: "Smuggler Caught With Heads of 353 African Gray Parrots"

— Game rangers recently arrested a man trying to smuggle 353 African gray parrot heads and 2,000 tail feathers, highlighting the problem of illegal parrot poaching in the tropical forests of West and Central Africa. While the United States and European Union have outlawed the importation of wild-caught parrots, about 15,000 a year are still taken annually from Cameroon's Lobeke region alone.

The New York Times: "Obama's Order Is Likely to Tighten Auto Standards"

— President Obama is expected to set wheels in motion today to allow states to set their own, stricter auto-emissions standards, signaling a dramatic break from Bush-era policies. For more, see today's Morning Briefing.

• LiveLeak [video]: "Volcano erupt underneath the ice"

— This video from central Iceland shows a volcano bursting from beneath an icy landscape, using it as an example of conditions on an ancient, snow-covered Earth.

National Geographic: "Giant Toxic Coal Ash Spill Threatens Animals"

— Even with as much coverage as the East Tennessee coal-ash spill has gotten during the last month, most of the hubbub has been about the alleged cleanliness of coal and effects to public health. The area's wildlife has been largely overlooked, even though it may have suffered most from the disaster. The billion-gallon flood of fly ash surged through habitats of crucial animals like mussels, snails and river otters, and toxins such as arsenic, thallium and cadmium could bioaccumulate up the food chain, much as mercury has done in fish around the world.

Russell McLendon

Russell McLendon ( @russmclendon ) writes about humans and other wildlife.