Summer Open Thread (#2)

For millennia, diamonds were the hardest known material, but they only rank at #7 on the current list. Can you guess which material is #1?

Tech expert Peter Leyden argues that we have a historic opportunity to harness AI and other transformative technologies in order to make a much better world over the next 25 years.

The electoral reform also known as instant-runoff voting promises bridge-building and broad appeal instead of culture war and gridlock.

In a citizen science project, thousands of pet dogs are helping scientists to understand what happens to memory and cognition in old age.

Quantum entanglement may remain spooky, but it has a very practical side.