youve-got-your-love-online:

Hank, you adorable dork <3 :)

youve-got-your-love-online:

Hank, you adorable dork <3 :)

ri-science:

We made this animation for our December 2013 advent calendar - a journey through our chromosomes in 24 short films.
Watch the whole series here.

ri-science:

We made this animation for our December 2013 advent calendar - a journey through our chromosomes in 24 short films.

Watch the whole series here.

What Causes Morning Sickness?

If you’ve ever been pregnant, or been around a pregnant lady, you know that the agony that is morning sickness — and it’s not just something that happens in the morning! SciShow explains the many theories about what causes it.

spacewatching:

Inside the Operations and Checkout Building high bay at NASA’s Kennedy Space Center in Florida, technicians dressed in clean-room suits have installed a back shell tile panel onto the Orion crew module and are checking the fit next to the middle back shell tile panel. Preparations are underway for Exploration Flight Test-1, or EFT-1.
Orion is the exploration spacecraft designed to carry astronauts to destinations not yet explored by humans, including an asteroid and Mars. It will have emergency abort capability, sustain the crew during space travel and provide safe re-entry from deep space return velocities. The first unpiloted test flight of the Orion is scheduled to launch later this year atop a Delta IV rocket from Cape Canaveral Air Force Station in Florida to an altitude of 3,600 miles above the Earth’s surface. The two-orbit, four-hour flight test will help engineers evaluate the systems critical to crew safety including the heat shield, parachute system and launch abort system.

spacewatching:

Inside the Operations and Checkout Building high bay at NASA’s Kennedy Space Center in Florida, technicians dressed in clean-room suits have installed a back shell tile panel onto the Orion crew module and are checking the fit next to the middle back shell tile panel. Preparations are underway for Exploration Flight Test-1, or EFT-1.

Orion is the exploration spacecraft designed to carry astronauts to destinations not yet explored by humans, including an asteroid and Mars. It will have emergency abort capability, sustain the crew during space travel and provide safe re-entry from deep space return velocities. The first unpiloted test flight of the Orion is scheduled to launch later this year atop a Delta IV rocket from Cape Canaveral Air Force Station in Florida to an altitude of 3,600 miles above the Earth’s surface. The two-orbit, four-hour flight test will help engineers evaluate the systems critical to crew safety including the heat shield, parachute system and launch abort system.

Dear sci show why heavy metals (Led, Mercury) are harmful to humans while lighter ones like iron and magnesium are beneficial?

"Heavy metals" is more of a colloquial term than a scientific one. There are lots of very heavy metals that aren’t dangerous at all. We wear gold and silver and platinum in our jewelry. Bismuth is all up in your PeptoBismol and most of the lanthanides and actinides are safe. Also, lots of the lighter metals (particularly sodium and lithium) while being great in certain chemical forms, in their pure forms will kill you extremely quickly (and violently.)

What it comes down to is simply whether the metal interferes with the normal functioning of your body. And we’ve got complicated bodily chemistries so it turns out that there are around a dozen metals that you don’t want to get in your body. At the same time, some of them, like zinc, are helpful it certain chemical configurations. A great example of how it’s not about the metal so much as the chemistry of the body…copper is safe for humans, but is extremely toxic to fish.

-Hank

txchnologist:

Making Legs For Future Robotic Animal Assistants

University of South Florida computer engineer Luther Palmer is working on one of the big problems in robotics—creating legs that can move over all different types of terrain that a machine would find out in the real world. His team at the Biomorphic Robotics Lab is doing intensive computer modeling and taking tips from horses and humans on agile locomotion.

The team’s vision, like many other roboticists, is to imbue the best movement ideas developed through evolution into their machines. Palmer writes on his lab’s website that in the future, “robotic canines will gallop up stairs and over collapsed beams in burning buildings, locating occupants for rescue personnel.”

He also sees a time of robotic horses to carry heavy loads, cockroaches to conduct surreptitious surveillance and gophers to prepare alien worlds for human habitation. 

See the National Science Foundation video  and one for Palmer’s RecoRoach below.

Read More

The First Robot Swarm, and Evolution’s Misfit

Hank shares the nuts-and-bolts of the world’s first robot swarm, and explains what the creepy, cute and extinct animal known as Hallucigenia can teach us about evolution.

If two sets of identical twins have kids are their kids siblings?

edwardspoonhands:

Gentically, the would be indistinguishable from siblings…but they would still be geneological cousins.

EDIT - I should say “Largely indistinguishable.” A normal DNA test wouldn’t do it, but if you sequenced their whole genome, you would be able to tell which kid belonged to which couple because of random mutations. It would take a VERY BIG COMPUTER though.

Why do different instruments (or voices) in the same note still sound different (a violin and a piano sound differently even if they're playing the same note)?

This is extremely weird and difficult to explain…which is why we’re lucky to have Vi Hart: https://www.youtube.com/watch?v=i_0DXxNeaQ0

-Hank

mad-as-a-marine-biologist:

Baby Flamboyant Cuttlefish in egg case (on a sock?!) - Daniel Geary 
Hey guys, my friend Dan is becoming a super talented underwater photographer. He refuses to get Tumblr, much to my dismay. Let’s try and convince him otherwise. Hands up if you’d like to see him post his stuff on Tumblr.

mad-as-a-marine-biologist:

Baby Flamboyant Cuttlefish in egg case (on a sock?!) - Daniel Geary 

Hey guys, my friend Dan is becoming a super talented underwater photographer. He refuses to get Tumblr, much to my dismay. Let’s try and convince him otherwise. Hands up if you’d like to see him post his stuff on Tumblr.