91av

Humans

91av’s guide to the 21 best ideas of the 21st century

A quarter of a century in, this is our definitive pick of the ideas in science and technology that are already transforming the world

Physics

Our elegant universe: rethinking nature’s deepest principle

Physics

A controversial experiment threatened to kill the multiverse in 2025

Life

A ghostly glow was seen emanating from living things in 2025

Scientists build a window into the fourth dimension

Quantum representation

Physics

Qubits break quantum limit to encode information for longer

Physics

Quantum experiment settles a century-old row between Einstein and Bohr

Quantum computer core. Light rays passing through the nanoscale crystal core of a quantum computer. Quantum computers, which are under development, are based on quantum mechanics and the principle of representing information in quantum bits (qubits) using quantum properties. This could involve optical properties of chemically doped crystals, like the one shown here. Quantum computing has the potential to massively increase computing power.

Physics

An ambitious look at quantum physics is fun – but overdoes it a little

Physics

The forgotten women of quantum physics

Space

Lumpy ‘caterpillar wormholes’ may connect entangled black holes

A mathematical model suggests that when a pair of black holes gets quantum entangled, this can give rise to a lumpy space-time tunnel between them

Physics

Quantum computers reveal that the wave function is a real thing

Physics

Quantum-inspired algorithm could help reveal hidden cosmic objects

Physics

Ultracold atoms could test relativity in the quantum realm

Physics

Ultracold clocks could reveal how quantum physics alters time