BBC Science Focus Magazine


“How aliens will make first contact with humanity.”

Views expressed in this science and technology update are those of the reporters and correspondents.

Accessed on 17 February 2023, 1248 UTC.

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Russ Roberts (

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Friday 17 February 2023

We need fourth ‘white’ traffic light to ease road congestion, science says

The system would allow autonomous vehicles to control the traffic flow at busy intersections.

traffic lights on a busy road

This is how much money you need to be happy, according to science

A rollover lottery win? A nice windfall that won’t trouble the tax man? Or just enough for a bag of chips on the way home?

Smiley face with a lot of coins, sad face with only one coin

The most weird and wonderful animals in this year’s Underwater Photographer of the Year contest

Take a look through our favourite images from this year’s competition.

Male plainfin midshipma

How aliens will actually make first contact with humanity, a scientist explains

The head scientist in the international Search for Extraterrestrial Intelligence committee explains how Earth’s introduction to extraterrestrials would most likely unfold.

Illustration of two aliens

Instant Genius Podcast: Fungal infections, with Dr Rebecca Drummond

Could a fungus ever really turn us all into mindless zombies?
The Instant Genius logo
BBC Science Focus covers

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Russ Roberts

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