Articles by

Nikk Ogasa

Why Hurricane Helene was so devastating

A perfect storm of climate, geologic and geographic conditions have combined to make Hurricane Helene...

A vital ocean current is stable, for now

The ocean’s circulatory system may not be doing as poorly as previously thought. A vital ocean artery...

X-rays from nuclear blasts could defend Earth from asteroids

An asteroid hurtling toward Earth could be deflected without a spacecraft ever touching it. The trick is...

How earthquakes build beefy gold nuggets

When strained by earthquakes, underground networks of quartz veins can generate enough voltage to snatch gold from...

Mantle waves buoy continents upward and bedeck them with diamonds

For billions of years, the continents have cruised across Earth’s surface like tectonic vessels, but they have...

The world’s record-breaking hot streak has lasted 14 months. When will it end?

In its latest global climate report, the National Oceanic and Atmospheric Administration confirmed that July was the...

Why Japan issued its first-ever mega-earthquake alert

On August 8, the Japanese Meteorological Agency issued its first-ever “megaquake alert,” after a magnitude 7.1 earthquake...

Squall line tornadoes are sneaky, dangerous and difficult to forecast

Meteorologist Thea Sandmael watched the storm close in. It was near enough for her to spot a...