女生小视频

Last Word

Spaceman walks on the red planet Mars. Space Mission. Astronaut travel in space; Shutterstock ID 532139260; purchase_order: -; job: -; client: -; other: -

Should we be thinking about genetic modifications for humans on Mars?

Paying homage to Kim Stanley Robinson鈥檚 Mars trilogy of books and to the film Interstellar, our readers consider the upsides and downsides of genetically altering our future space explorers

Regulars
H3NTB2 Woman by giant trees in snow-covered forest, Sequoia National Park, California, USA

Why don鈥檛 trees rot in the ground, while wooden structures do?

Regulars
Close up of a spinning globe on black; Shutterstock ID 22230961; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

Regulars
2DAC6P0 Sculpture 'Medics to the World' honouring the health care workers battling Covid-19

Are there good viruses? What would happen if all viruses disappeared?

Regulars
S3W7DX Close up of the large nose and snout of a cow behind bars

Why do our nostrils point down, not straight out from our faces?

Regulars
2FWP497 Liquid iron molten metal pouring from ladle container into mold, industrial metallurgical factory, foundry cast, heavy industry background.

This week鈥檚 new questions

Regulars
Krakow, Poland - 4 May 2024: Large old antique medieval book written in Latin gothic font, colorful illuminations object closeup museum exhibit, Dominican monastery Old religious books concept; Shutterstock ID 2516551261; purchase_order: -; job: -; client: -; other: -

How and why did grammatically complex languages such as Latin develop?

Regulars
J7JGYD Cuban Rock Iguana, Cyclura nubila, Jardines de la Reina, Cuba

Why did some species survive the Cretaceous-Palaeogene extinction?

Regulars
Last Word

This week鈥檚 new questions

Regulars
2B74MKJ 3D Illustration Rendering. Flat earth theory with atmosphere, sun, moon and glass cover. Ancient mythology belief in plane globe in form of disk.

If Earth was flat, how would gravity manifest?

Our readers have a lot of fun getting to grips with this one, working out how such an Earth would look 鈥� and what its inhabitants might be like

Regulars

Why are so many Scottish animals red-headed, from squirrels to people?

Regulars

This week鈥檚 new questions

Regulars

If we ever find life on other worlds, will it be based on DNA?

Regulars

Why do our nostrils point down, not straight out from our faces?

Regulars