When you combine the Uncertainty Principle with Einstein's famous equation, you get a mind-blowing result: Particles can come from nothing.
Cosmologists are largely still in the dark about the forces that drive the Universe.
Since its observation discovery in the 1990s, dark energy has been one of science's biggest mysteries. Could black holes be the cause?
Here on Earth, the Sun is our primary source of light, heat, and energy. But it also poses a grave threat to human civilization.
Two fundamentally different ways of measuring the expanding Universe disagree. What's the root cause of this Hubble tension?
Wind farms seem less productive when scientists incorporate more realistic atmospheric models into their output predictions.
Some solar cells are so lightweight they can sit on a soap bubble.
You might think it's impossible to run out of wind, but Europe's "wind drought" proves otherwise. And it's only going to get worse.
Its implications go well beyond the Earth itself, affecting even the future of space travel.
For decades, theorists have been cooking up "theories of everything" to explain our Universe. Are all of them completely off-track?
The second law of thermodynamics tells us that entropy always increases. But that doesn't mean it was zero at the start of the Big Bang.
The Universe isn't just expanding, the expansion is also accelerating. If that's true, how will the Milky Way and Andromeda eventually merge?
In the quest to measure how antimatter falls, the possibility that it fell "up" provided hope for warp drive. Here's how it all fell apart.
If you eat a diet full of refined grains, high-sugar drinks, and sweets, there's a good chance you have too much insulin.
We can reasonably say that we understand the history of the Universe within one-trillionth of a second after the Big Bang. That's not good enough.
Simple physics makes hauling vast ice chunks thousands of miles fiendishly difficult — but not impossible.
If you're a massless particle, you must always move at light speed. If you have mass, you must go slower. So why aren't any neutrinos slow?
From the earliest stages of the hot Big Bang (and even before) to our dark energy-dominated present, how and when did the Universe grow up?
From how life emerged on Earth to why we dream, these unanswered questions continue to perplex scientists.
Realizing that matter and energy are quantized is important, but quantum particles aren't the full story; quantum fields are needed, too.
Einstein's relativity overthrew the notion of absolute space and time, replacing them with a spacetime fabric. But is spacetime truly real?
In just a few seconds, a gamma-ray burst blasts out the same amount of energy that the Sun will radiate throughout its entire life.
Best in class: Denmark and Uruguay. Worst in class: Papua New Guinea, Venezuela, and Russia.