A brief history of the sun

Meet the sun: a 4.6-billion-year-old nuclear reactor that delivers more energy to Earth in one hour than humanity uses in a year. Here is the full story of what it is and how it works.

· 6 min read

A brief history of the sun

Emmett Becker · 6 min read

Mother NatureView all

· 9 min read

What causes brownouts?

Like thunderstorms and fireflies, brownouts are a part of summer for many homeowners. Here's what causes them, why they happen more in summer, and why the grid is more vulnerable to them than ever.

· 8 min read

El Niño is coming. What it means for your power bill.

Far out in the Pacific Ocean, a potentially record-setting El Niño is developing, with near-certainty of a peak this winter. Here is what homeowners in Massachusetts and Illinois should know today.