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Humans

These ancient sand drawings could be a fifth type of palaeoart

Was this perfect circle with a central depression drawn by our ancestors in the sand, around 136,000 years ago? Palaeontologist Charles Helm certainly thinks so

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Four cheerful female friends having fun on summer road trip

Which is the more efficient way to cool my car, A/C or the windows?

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Bengal cat washing itself on bed; Shutterstock ID 1123136123; purchase_order: -; job: -; client: -; other: -

Why do cats wash themselves, while dogs don鈥檛? (continued)

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iss067e189024 (July 16, 2022) --- The sun's rays begin to illuminate the Earth's atmosphere as the International Space Station flew into an orbital sunrise 261 miles above Texas. iss067e189024 NASA ID: iss067e189024 iss067e189024 (July 16, 2022) --- The sun's rays begin to illuminate the Earth's atmosphere as the International Space Station flew into an orbital sunrise 261 miles above Texas. Date Created:2022-07-16 Center:JSC

When was the first sunrise on Earth? (continued)

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2R067KD The Great Sphinx is the oldest known monumental sculpture in Egypt. It was built more than 4,500 years ago to guard the pyramid of Khafre at Giza.

This week鈥檚 new questions

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Young adults fall over if texting while walking, find scientists

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Cozy bright bedroom with indoor plants.Home interior design.Biophilia design,urban jungle concept.; Shutterstock ID 2170598701; purchase_order: -; job: -; client: -; other: -

Life

Why you shouldn’t worry about keeping plants in your bedroom at night

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Tom Gauld reveals the Venn diagram of a flying object

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Twisteddoodles: Mixing chemicals – fiction versus reality

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Angela Stevenson, 39, a marine scientist for GEOMAR, dives with a bunch of flowering seagrass she has collected, in Laboe, Germany July 10, 2023. The group of scientists collect seeds for research into planting the seeds and breeding a more heat resistant seagrass for the SeaStore Seagrass Restoration Project at the GEOMAR Helmholtz Centre for Ocean Research Kiel. "Scientists ask questions about the environment and the society and solve problems in a systematic way. But teaching citizens and the implementation of the method is not necessarily our job. But then I asked myself, who else is going to do this?" said Stevenson. REUTERS/Lisi Niesner SEARCH "NIESNER SEAGRASS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES - RC2B02ADN7P3

Life

Photos capture mission to rescue seagrass meadows in the the Baltic

Seagrass is a crucial marine ecosystem that is being lost to climate change. Researchers in Germany are trying to help the meadows flourish again

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Mathematics

The easy tricks that can maximise your lottery winnings

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What was used to wean babies in prehistoric times?

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Why can鈥檛 we conjure up smell and touch in our heads?

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This week鈥檚 new questions

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