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WHY does time only move forward?

Physics

Why does time only move forwards? Possibly just because we’re ignorant

The one-way flow of time is one of the great mysteries of physics. It might be that we see causes and effects just because our information about reality is incomplete

Features

WHY is quantum theory so strange? Out of Your Mind Science series. Design made of spiral of human silhouette face line and abstract elements on the subject of consciousness, the mind, artificial intelligence and technology

Physics

Why is quantum theory so strange? The weirdness could be in our heads

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Albert Einstein

Space

Lost in Space-Time newsletter: Will a twisted universe save cosmology?

News

The quantum experiment that could prove reality doesn't exist

Physics

The quantum experiment that could prove reality doesn't exist

Features

MicroBooNE

Physics

Physicists fail to find mysterious 'sterile neutrino' particles

News

Stephon Alexander interview: Is the universe a self-learning AI?

Physics

Stephon Alexander interview: Is the universe a self-learning AI?

Features

Coloured transmission electron micrograph (TEM) of chloroplasts from the yellow portion of a yellow/green variegated Coleus blumei plant. Chloroplasts are the sites of photosynthesis, the process that synthesises carbohydrates from carbon dioxide and water using sunlight. The structure of a variegated chloroplast is slightly different from that of a normal green chloroplast. The granal stacks, formed from parallel thylakoids (membranes, bright lines), that contain the chlorophyll pigments are less ordered in the variegated chloroplast. The pigments themselves are also slightly different. Magnification: x14,300 when printed at 10cm wide.

Physics

From photosynthesis to navigation, life may exploit quantum effects

Features

Why it might be impossible to build a practical quantum computer

Physics

Why it might be impossible to build a practical quantum computer

Features

What putting big things in quantum states can tell us about reality

Physics

What putting big things in quantum states can tell us about reality

Features

Is quantum theory really as random as it seems?

Physics

Is quantum theory really as random as it seems?

The maths suggests the reality we get from quantum probabilities is random, but there might be some hidden determinism at play – or perhaps the present can influence the past

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Physics

Beyond quantum physics: The search for a more fundamental theory

Features

Physics

Why is it so difficult to find a viable quantum theory of gravity?

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Physics

Can quantum effects in the brain explain consciousness?

Features

Physics

Quantum Darwinism: Can evolutionary theory explain objective reality?

Features