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How to see a full circle rainbow

It’s possible to see the whole circle of a rainbow – but sky conditions have to be just right. Plus you have to be up high!

Which lizards can outlast a hurricane?

In the wake of hurricanes Irma and Maria, researchers document how catastrophic storms can be agents of natural selection, influencing how species evolve.

12 shark facts that might surprise you

#5 If you flip a shark over, it goes into a trance.

Space-based solar power: How close to reality?

The technology is further along than you might think for capturing solar energy in space – where the sun always shines – and beaming it to Earth.

The vanishing of the 1st American dogs

“It is fascinating that a huge population of dogs that inhabited all corners of the Americans for thousands of years could have disappeared so rapidly.”

Amazing Kilauea volcano imagery you might have missed

For more than 2 months, lava has been pouring from Hawaii’s Kilauea volcano, destroying homes and remaking the land. A compilation of photos and videos, here.

Witness the birth of an iceberg

This iceberg broke off Greenland’s Helheim Glacier on June 22. If laid atop New York City, it’d stretch from lower Manhattan to Midtown.

Volcano discovered under fastest-melting Antarctic glacier

Antarctica’s Pine Island Glacier is melting, thanks to warming waters from below. What’s more, a recent study has discovered a volcano beneath the glacier.

Volcanic mood rings

The crater lakes at the summit of Kelimutu volcano in Indonesia change colors from day to day. The colors can change from white, green, blue and brown to black.

June 2018 ties for 3rd-warmest June on record

June 2018 continued the warming trend of the past 40 years. Plus, a word about the climate change myth that there’s been no warming since 1998.