The vibrant coloration of this iridescent ammonite fossil is unique to ammonites from Alberta, Canada. Its iridescence is the result of being exposed to high temps & pressures over millions of years, becoming fossilized & turning into a mineral known as aragonite. #CephalopodWeek pic.twitter.com/dNlxpZJDXN

— American Museum of Natural History (@AMNH) June 24, 2021

This would be our night sky if the Andromeda galaxy were a bit brighter

Image by Tim Buckley pic.twitter.com/OZhpeQePwp

— Latest in space (@latestinspace) June 30, 2021

Fireflies plus long exposure photographs… pic.twitter.com/dYKZT9hP1p

— David Nogues-Bravo (@Noguesbravo) April 19, 2021

Welcome to Zhaotong City, China, the narrowest city in the world!
pic.twitter.com/L88AhsuXe8

— Xavi Ruiz (@xruiztru) June 26, 2021

This is a secondary school in Africa – Malawi and it's made from wood and straw bales, designed by Nuru Karim and co. It is such a beautiful example of African architecture at its best design. pic.twitter.com/BSeQ2WPCkv

— Africa Archives ™ (@Africa_Archives) May 23, 2021

A related argument from Alan Kay: https://t.co/WUey1BzXGL pic.twitter.com/6yDKI7Etzg

— Michael Nielsen (in NYC) (@michael_nielsen) March 7, 2021

GPT-2: *writes poems*

Skeptics: Meh

GPT-3: *writes code for a simple but functioning app*

Skeptics: Gimmick.

GPT-4: *proves simple but novel math theorems*

Skeptics: Interesting but not useful.

GPT-5: *creates GPT-6*

Skeptics: Wait! What?

GPT-6: *FOOM*

Skeptics: *dead*

— Alexander Kruel (@XiXiDu) July 20, 2020

The amazing camouflage of the great grey owl. Over the course of its evolution, any gene that happened to make the owl a little less visible had a greater chance of being passed on. The gradual accumulation of such genes led to the near-perfect camouflage we see today. pic.twitter.com/a1xFEpp30k

— Steve Stewart-Williams (@SteveStuWill) February 19, 2021

Wagner's sketches for Tristan und Isolde! pic.twitter.com/nyIpVmKvHt

— Musical Notation is Beautiful (@NotationIsGreat) December 29, 2020