References

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.

At the core of a quantum computer is the quantum processor, but these technologies are vastly different from the CPUs found in conventional computers.

People who "choke" under pressure underperform in high-stakes situations out of stress and worry. But what causes this phenomenon?

Cahokia, in modern-day Illinois, was one of the largest cities in the world.

Qubits are the fundamental building blocks of quantum computers — and, when fitted into these machines — rely on the weird laws of quantum mechanics to process calculations in parallel.

REFERENCE Wolf spiders are a large family of hairy and athletic arachnids that chase down prey on the ground rather than catching food in webs.

With the rise of AI models and automated bots, we find out whether there is any weight to the idea that the internet is now mostly dominated by machines or if it’s still a human hangout.

Reference Tardigrades, often called water bears or moss piglets, are near-microscopic animals that are extremely resilient.

If you’re in the market for new gear to support your rock-hunting hobby, check out our list of the best rock tumblers.

reference Centrifugal and centripetal are two closely related forces that describe circular motion, but the meanings are often mixed up.

The woolly mammoth, a cousin of today's elephants, died out about 10,000 years ago. It may be possible to bring them back by cloning, but should we?