References

Here's all we know about Black Friday 2025 so far — from when it takes place to the best science gifts to look for in the sales.

Reference We look at the potential benefits of air purifiers and how these air-cleaning devices can help manage indoor air quality.

Reference Can air purifiers help reduce the symptoms of mold allergy?

We pit air purifiers against dehumidifiers to get to the bottom of what each appliance really does.

REFERENCE We take a look at air purifiers vs humidifiers to get a sense of the differences.

Blame plate tectonics for Earth’s mountains, earthquakes, volcanoes, and why its continents fit together like pieces of a giant jigsaw puzzle.

Almost everything you know about the famous Fibonacci sequence is wrong.

If you're looking to make the most of the dark winter nights, Black Friday and Cyber Monday are fantastic times to save money on your next telescope ahead of Christmas.

An almond-shaped structure deep in the brain controls people's feelings of hunger and fullness in an attempt to keep them at a constant body weight. In obesity, its signaling can be disrupted.

Reference We take a closer look to see if using air purifiers helps with asthma.

REFERENCE Air purifiers can improve air quality, but do these devices help relieve allergies?

REFERENCE We pit air purifiers against ionizers to get to the bottom of what each appliance really does.

Reference Air purifiers are intended to remove pollutants from the air, but how well do they really work?

REFERENCE Can air purifiers help with dust and dust mite allergies?

The use of "anno domini" and "before Christ" to mark time began in the early days of Christianity, when clerics needed to know when Easter would fall.

New scientific techniques are helping us reconstruct people from the past in uncanny detail.

The Nobel Prize in Chemistry includes famous winners such as Marie Curie and Otto Hahn.

An artist's illustration of an artificial neural network.

Here's a look at past winners of the Nobel Prize in Physiology or Medicine.

Although quantum computing is a nascent field, there are plenty of key moments that defined it over the last few decades as scientists strive to create machines that can solve impossible problems.