I made a chart of some bioluminescent species! Full image on tabletopwhale.com
I can barely believe this, but this is a real-life photo I took of our real-life galaxy. 120 second exposure from the top of Blue Mountian last night.
Anonymous said: Why do we need to clean our teeth from an evolutionary point of view? Surely our teeth haven't always been falling out as early primates
Well, a few things to consider. First, these days we eat a lot more foods with nutrients that bacteria REALLY LOVE, particularly simple sugars. So there is some truth to that whole “candy rots your teeth” thing. But the bigger answer is that animals get terrible tooth decay (including primates) and keepers regularly brush the teeth of animals in zoos to prevent these problems. Finally, the average human these days lives a lot longer than we’re designed to. The life expectancy of our nearest relative, the chimpanzee, is just 40 years in the wild. In captivity, that number goes up to around 60. We just live longer than we’re supposed to…so we have to keep our parts working for longer than they’re designed to work…which means brushing your teeth a couple times a day.
Science, then, is not like the onion in the often used analogy of stripping away layer after layer to get at some core, central, fundamental truth. Rather it’s like the magic well: no matter how many buckets of water you remove, there’s always another one to be had. Or even better, it’s like the widening ripples on the surface of a pond, the ever larger circumference in touch with more and more of what’s outside the circle, the unknown. This growing forefront is where science occurs… It is a mistake to bob around in the circle of facts instead of riding the wave to the great expanse lying outside the circle. —
Stuart Firestein, from Ignorance: How It Drives Science
I was reminded of this quote, which sums up the driving force of the scientific process better than just about anything I’ve ever read, today after watching the latest Vlogbrothers video, in which Hank Green channels his inner Socrates:
"I know one thing, that I know nothing."
Watch Hank admit to being a towering mountain of ignorance (something we should all admit) below…
jessroexo said: What does the fox say?
Lots of things! Very weird things.
Amelia Earhart Deep Sea Diving off Block Island, 07/25/1929
From the series: Photographic File of the Paris Bureau of the New York Times, compiled ca. 1900 - ca. 1950. Records of the U.S. Information Agency, 1900 - 2003
According to the date, this photo was taken just 1 day after the pioneering aviatrix’s 32nd birthday (born July 24, 1897).
Hi ThanksTank friends! Silly us we finished filling the tank months ago but we never took pictures of the final tankmates. VidCon happened and things got a little crazy over here. So without further ado we would like you to meet Clarice, Jamin, Shellshark and Meghan Murowanyj. These are Black Tetras and they have been doing great since they’ve been in the tank. Now that the tank is full we will be going back and adding some of the fish that we lost over the last nine months. Thanks again for your support of SciShow. Hopefully we will have an inside the tank video soon.
Check out our latest additions to the SciShow Thanks Tank — all our fish were named by Subbable supporters!