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Technology

Nanobot uses a DNA clutch to engage its engine

A tiny robot with a clutch that mimics similar mechanisms found in microorganisms could be used to trigger the internal workings of a cell

Schematic image of GaN hollow nanowires on a sapphire substrate.

Technology

Lasers smaller than a human hair emit doughnut-shaped light

Space

Russia’s space weapon: Is it nuclear and does it pose a threat?

Environment

Reforestation initiatives in Africa may damage grassland and savannah

Medication abortion pills, misoprostol and mifepristone

Health

Abortion medication is as safe over telehealth as in a doctor’s office

Life

The right microbes on plant roots can make your tea taste better

Environment

Inside the Brooklyn start-up making clean jet fuel with captured CO2

Humans

When does a bone become a fossil?

Mind

Microdosing LSD increases the complexity of your brain signals

Life

Poison frogs tap-dance to rouse prey and make them easier to catch

Different species of poison frogs tap their toes when feeding to create vibrations that cause flies to move closer to them

Health

School uniforms may prevent children from getting enough exercise

Health

Injections of drug-filled nanoparticles may relieve arthritis pain

Humans

Dogs and horses buried with Iron Age people may have been beloved pets

Technology

How your age, gender and nationality alter how you interpret emojis