Once every spring, a few days after the full moon, corals of the great barrier reef release eggs and sperm simultaneously – a ...

(via Veritasium) Glass is one of the most important materials humans have ever made.

(via MinuteEarth) The Grand Canyon is super-wide and super-deep, which might make you think that the Colorado River, which ...

Once every spring, a few days after the full moon, corals of the great barrier reef release eggs and sperm simultaneously – a phenomenon so spectacular it can be seen from ...