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All the vampire superstitions! Except sunlight

Nice, old-timey church in a sleepy town in Slovakia. What could possibly be interesting about this place?

Watch: President Obama redefines black excellence in Congressional Black Caucus event speech 

Pipette. Run. Cry. Repeat. Comic by www.facebook.com/sketchingscience.atgc/

Don’t try this at home!

I talked about the interesting structure of graphite (aka pencil lead) in our latest video:

But I didn’t have time to touch on one of the fascinating side effects of this structure - graphite’s conductivity. A single, two-dimensional sheet of graphite (known as graphene) is the most conductive material we know about. Diamond is among the least conductive materials we know about.

Impure graphite - like the stuff we find in pencils - is somewhere in between. It’s more conductive than sea water and less conductive than steel. As free electrons flow through it, it lights up like a filament and puts out a lot of heat.

Some risk-taking YouTubers (MausolfB Education and ElectroBoom) demonstrated this property so you don’t have to.

Diamond photo credit: Macroscopic Solutions, Graphite photo credit: DerHexer

Like Britain, Seattle also takes it as a sign of weakness to use an umbrella

In the early 1750s, an Englishman by the name of Jonas Hanway, lately returned from a trip to France, began carrying an umbrella around the rainy streets of London. People were outraged. Some bystanders hooted and jeered at Hanway as he passed; others simply stared in shock. Hanway was the first man to parade an umbrella unashamed in 18th-century England, a time and place in which umbrellas were strictly taboo. In the minds of many Brits, umbrella usage was symptomatic of a weakness of character, particularly among men. The British also regarded umbrellas as too French—inspired by the parasol, a Far Eastern contraption that for centuries kept nobles protected from the sun, the umbrella had begun to flourish in France in the early 18th century when Paris merchant Jean Marius invented a lightweight, folding version that, with added waterproofing materials, could protect users from rain and snow. In 1712, the French Princess Palatine purchased one of Marius’s umbrellas; soon after, it became a must-have accessory for noblewomen across the country. Later British umbrella users reported being called “mincing Frenchm[e]n” for carrying them in public.

This map shows where the polls got it wrong Purple = Trump received more votes than expected Green = Clinton received more votes than expected Click here for full election results

Sympathy cards for scientists | @myjetpack

Oops

When humans “domesticated” fire 400,000 years ago they made the right combination of conditions – longer periods with close human contact, plus smoke-damaged lungs – for tuberculosis to mutate from a harmless soil bacterium into our number one bacterial killer, according to new research.