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Penney

Technology

The blushing Englishman who stole nuclear secrets from the US

William Penney planned the Nagasaki bomb as part of the Manhattan Project, and kept the UK in the nuclear race. But was he a master of bluffing or a master spy?

Features

Energy from evaporating water could rival wind and solar

Earth

Energy from evaporating water could rival wind and solar

News

AI could put a stop to electricity theft and meter misreadings

Technology

AI could put a stop to electricity theft and meter misreadings

News

chess

Earth

The nuclear stalemate is crumbling – what are our options?

Leader

mining

Earth

Our terrifying energy future leaves us with uncertainties

Culture

nuclear missile artwork

Technology

The new nuclear race: Why North Korea isn’t the real story

Features

solar panels in China

Technology

Why China's green ambitions will make it the next world leader

Insight

epicentre of recent seismic activity in North Korea

Humans

Can the US really nuke North Korea without starting a world war?

Analysis

bus

Technology

Failed electric buses remind us that roads not taken do matter

Leader

Seismic tests hint North Korea’s nuke is its first hydrogen bomb

Technology

Seismic tests hint North Korea’s nuke is its first hydrogen bomb

Kim Jong-un’s latest test is probably an order of magnitude bigger than the last one, about a year ago – and suggests the nation has developed a worrying new capability

News

Technology

Thorium could power the next generation of nuclear reactors

News

Technology

Twisted carbon nanotubes harness waste energy and put it to work

News

Earth

We really can run the world on renewable energy – here’s how

Comment

Earth

The push for UK fracking may be 55 million years too late

News