51动漫

Have bite-mark forensics bitten the dust?

Feedback looks at the looking into of who (human and shark) bit what (shark and human)

Tom Gauld on contact with aliens

Twisteddoodles on how a science project might gain media attention

Engineer Jason Lyon poses as he views Loo Garden, a temporary subterranean garden designed to represent a future healthier River Thames, in a section of the Thames Tideway Tunnel - commonly known as the 'Super Sewer' - a 25 kilometre tunnel being built across London under and along the River Thames to deal with combined sewer overflows currently polluting the river, in London, Britain, June 29, 2023. REUTERS/Toby Melville - RC22T1ANLLXT

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See the garden blooming in a ‘super sewer’ deep below London

Mathematics

The stunningly simple rule that will always get you out of a maze

HCNBCF THOR: THE DARK WORLD, Chris Hemsworth as Thor, 2013. ph: Jay Maidment/?Walt Disney Studios/courtesy Everett Collection

Could you make a machine that 鈥渇lew鈥� like Thor鈥檚 hammer in the comics?

This mosaic of Mars is a compilation of images captured by the Viking Orbiter 1. The center of the scene shows the entire Valles Marineris canyon system, more than 2,000 miles (3,000 kilometers) long, 370 miles (600 kilometers) wide and 5 miles (8 kilometers) deep, extending from Noctis Labyrinthus, the arcuate system of graben to the west, to the chaotic terrain to the east.

If humans colonised Mars, how would they calculate time? (Part 2)

HDTNNH Crab-eating macaca in Thailand ; specie Macaca fascicularis family of Cercopithecidae

This week鈥檚 new questions

Could a cat nose function as a ‘highly efficient’ gas chromatograph?

Tom Gauld on a physicist’s summer holiday

Tom Gauld's weekly cartoon

Twisteddoodles gives Earth a makeover

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See the remarkable photos up for Astronomy Photographer of the Year

Space

How to spot Jupiter’s icy moons

If a cyclist and runner exercise together, who expends more energy?