Background Illustrations provided by: http://edison.rutgers.edu/
Reblogged from clitasaurous  37,406 notes

nubbsgalore:

photos of sakurajima, the most active volcano in japan, by (click pic) takehito miyatake (previously featured) and martin rietze. volcanic storms can rival the intensity of massive supercell thunderstorms, but the source of the charge responsible for this phenomenon remains hotly debated.

in the kind of storm clouds that generate conventional lightning, ice particles and soft hail collide, building up positive and negative charges, respectively. they separate into layers, and the charge builds up until the electric field is high enough to trigger lightning.

but the specific mechanism by which particles of differing charges are separated in the ash cloud is still unknown. lightning has been observed between the eruption plume and the volcano right at the start of an eruption, suggesting that there are processes that occur inside the volcano to lead to charge separation.  

volcanic lightning could yield clues about the earth’s geological past, and could answer questions about the beginning of life on our planet. volcanic lightning could have been the essential spark that converted water, hydrogen, ammonia, and methane molecules present on a primeval earth into amino acids, the building blocks of life.

(see also: previous volcanology posts)

Reblogged from strangeaddress  9,618 notes

pricantaz:

wakeupslaves:

angrywocunited:

thebowspring:

Native American Confronts Protesters on Illegal Immigration

This man is my hero. 

White people are the problem!

Awesome

Reblogged from lazy-bird  97,136 notes

disneyvillainsforjustice:

-teesa-:

7.23.14

George Takei describes the moment when he and his family were sent to an internment camp.

"Another scene I remember now as an adult is every morning at school we started the day with the Pledge of Allegiance to the flag…there was the American flag flying over the camp but I could also see the barbed wire fence and the sentry towers pointing at us from my schoolhouse window as I recited the words ‘With liberty and justice for all’." - George Takei, The Daily Show (July 24, 2014). 

Full Episode (apologies, The Daily Show website does not have the best video player). 

To Be Takei documentary official website. 

- Mod Dawes Sr.