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solar power

Tiny solar-powered drones could stay in the air forever

Technology

Tiny solar-powered drones could stay in the air forever

An aerial robot weighing 4 grams is powered by tiny solar panels that produce extremely high voltages – an approach that could enable drones to fly indefinitely

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Space

Moon of Saturn has an equivalent of freshwater rivers and salty oceans

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Environment

How incredibly simple tech can supercharge the race to net zero

Features

Environment

Canned water made from air and sunlight to hit US stores in September

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Environment

Solar boom has replaced farmland that could feed millions of people

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Space

What would happen if Earth was the centre of the solar system?

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Is an old NASA probe about to redraw the frontier of the solar system?

Space

Is an old NASA probe about to redraw the frontier of the solar system?

Features

Space

Pluto and the largest moon of Neptune might be siblings

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Primordial black holes crossing stars, orbit figures.

Space

Tiny black holes hiding in the sun could trace out stunning patterns

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Environment

Solar-powered floating islands could help to regrow coral reefs

A trio of hexagonal islands could generate solar electricity to power a process that accelerates coral growth, with space for a research lab and a garden

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Environment

Tech firms claim nuclear will solve AI's power needs – they're wrong

Analysis

Physics

Sunlight-trapping device can generate temperatures over 1000°C

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Mathematics

500-year-old maths problem turns out to apply to coffee and clocks

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Space

Mars is blasting plasma out of its atmosphere into space

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