Best Of MetaFilter

Oil Refinery Reference #133 by claralieu (cc by)

cotton dress sock asks "How close to an oil refinery is too close?," and flug has answers. Lots of answers.

Seafloor Surveys After Katrina by NOAA Images

bassomatic says, "my dad and his team of underwater archaeologists were the first to find an ancient shipwreck using side-scan sonar..."

Scary stories and freaky facts about oxygen deprivation at altitude

How does a scuba diver smell shipwreck cheese underwater? And some other ancient foods, eaten in the name of science

AskMe offers some resources on cloudwatching for beginners

Moby Dick is fabulous - Mefites talk Melville and subtext, and what you thought of classic novels before you read them, and the linked writer drops by to respond

Submersible finds glowy purple orb in the depths

And finally, that pressing question, what if I fell out of an airplane in a tank full of water?