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Earth Science
Neither one reflects the other; they’re both blue for entirely different reasons. If you’ve ever been curious about the world you live in, you’ve probably wondered why the sky is […]
Our planet is rare, precious, and fragile. It’s up to all of us to be its steward. With the advent of rocketry and spaceflight, our cosmic perspective changed forever. The very […]
Weather isn’t climate. The President isn’t a scientist. And physics is still real. The country is freezing in an unprecedented fashion, and global warming is to blame. Sound crazy? The cold […]
Whether you caught or missed the eclipse of January 20/21, 2019, here’s what you need to know for all the ones you’ll ever view again. On January 20/21, 2019, a very […]
On January 20/21, half of Earth will experience a total lunar eclipse. For the first time in 19 years, this includes all of North and South America. When the Sun, Earth, […]
Sometimes, chemistry can be more important for color than even physics. All across the world, volcanic eruptions remind us of the destructive power residing beneath Earth’s surface. You might be used […]
The Earth is getting warmer, and humans are the cause. This is why. Let’s play pretend for a moment. Pretend, if you can, that you’ve never heard about the idea of […]
If you photograph the Sun at the same time every day, you get a bizarre figure-8 shape: an analemma. Here’s why. At any time of day, you could theoretically set up […]
Lasers, mirrors, and computational advances can all work together to push ground-based astronomy past even the limits of Hubble. One of the most profoundly remarkable properties about our atmosphere is that […]
The world’s greatest clockmaker sent a clock to the new world, and everything went haywire. The reason why will shock you. For millennia, humanity’s one-and-only reliable way to keep time was […]
And if we did, what would happen if you fell in? Out in the countryside of rural America, you can find all sorts of attractions that are too-good-to-be-true. One of the […]
If emissions don’t go down, there’s still an option for combatting global warming. We just have to effectively dim the Sun. Global climate change is one of the most pressing long-term […]
Whatever you do, don’t try to wash it away with water. Every few months, a volcanic eruption occurs on Earth, with lava flows and enormous plumes of volcanic ash. In 2015, […]
The hole in the ozone is shrinking, for sure, but to assess the whole layer, you need to look at the whole Earth. Throughout the history of life on Earth, there’s […]
Earthquake? Nuclear explosion? Fission or fusion? We know, even if world leaders lie. “North Korea has taught a great lesson to all the countries in the world, especially the rogue countries […]
Some say it’s more than all of humanity emits in a year. But people say a lot of things. What does the science say? “One volcano puts out more toxic gases — one […]
And how if you try this with someone shorter than you are, you’ll find it extra convincing! “I drive from Florida to California all the time, and it’s flat to […]
We’ve just had the largest full Moon in 68 years. Here’s what was — and wasn’t — true. “For most people, we often marvel at the beauty of a sunrise or the magnificence of […]