In March 2014, scientists working on the BICEP2 telescope at the South Pole reported an incredible discovery: a swirling pattern in the cosmic background radiation that appeared to indicate the presence of gravitational waves.

Do we make conscious decisions? Or are all of our actions predetermined? And if we don’t have free will, are we responsible for what we do? Modern neurotechnology is now allowing scientists to study brain activity neuron by neuron to try to determine how and when our brains decide to act.

On September 14th, 2015, a ripple in the fabric of space, created by the violent collision of two distant black holes over a billion years ago, washed across the Earth. As it did, two laser-based detectors momentarily twitched, confirming a century-old prediction by Albert Einstein and marking the opening of a new era in astronomy.

#YourDailyEquation with Brian Greene offers brief and breezy discussions of the most pivotal equations of the ages. Even if your math is a bit rusty, these accessible and exciting stories …

Extra dimensions of space — the idea that we are immersed in hyperspace — may be key to explaining the fundamental nature of the universe. Relativity introduced time as the fourth dimension, and Einstein’s subsequent work envisioned more dimensions still — but ultimately hit a dead end.

Zoologist Jarod Miller has traveled the world and encountered countless members of the animal kingdom. Meet a fennec fox, a kinkajou, and a lemur and learn about the special traits …