did-you-kno:

A recent study shows that people who sit for prolonged periods can help prevent serious health problems by taking a 5 minute walk once an hour. Source
gonatistagrisea:

I can’t get enough of these vast, imaginary, scientific landscape illustrations in my textbook. This one shows how the open ocean is represented by water that is offshore and away from coral reefs. This biome can be broken up into several zones. The photic zone contains sufficient light for photosynthesis by algae, while water in the aphotic zone is so deep that sunlight cannot penetrate.
archatlas:

Calvin’s Fate [via]
tkohl:

100 years of progress
foto119:

Foto 119  |  Instagram: Foto119
simonsaquascapeblog:

Favourites: a simple coldwater planted tank
… and still beautiful!
Foto credit by Marcos Kim
calvillophoto:

nevver:

Happy Labor Day

But remember Unions Are BAD!  Who needs 8 hr days, weekends, paid vacations, children in school instead of at work, or pensions?
historicaltimes:

Heavily armed women from the Turkish PKK have gone into into Iraq to tackle the jihadists, 2014
everything about this image is awesome… it drips exploration!
historicaltimes:

Charging the battery of a Detroit electric automobile. 1919

Makes one wonder where we’d be if we concentrated on battery technology from 1919 onwards instead of taking the easy road with fossil fuels. Granted things in real life are never as black and white as in one’s mind!
historicaltimes:

Trench rats killed by terrier, 1914
TOP