HOME
Technology
Life
Discover science
Medicine - Health
Event
EntertainmentWhy do whales swing their tails up and down, but sharks swing their tails to the sides?
Why are they the same sea creatures, but the big whales swim in a way that swings their tail up and down and sharks and many other fish swing their tails sideways horizontally?
Latest update
- Why are there so many giant fish flooding the Three Gorges Dam but no one dares to catch them?
- Klein Bottle: Why can't Earth's water fill this magical interdimensional device?
- What is the tidal phenomenon?
- The strange life of the 'black blood' tribe living on the world's highest freshwater lake
- Plasma fusion engine could enable intergalactic travel
- US successfully transmits solar power from space to Earth
- 5 reasons why flash floods and landslides devastated the northern mountainous region
- A series of photos that will surprise you with the true beauty of the Qing Dynasty's Fujin and Princesses
Why are there so many giant fish flooding the Three Gorges Dam but no one dares to catch them?
Klein Bottle: Why can't Earth's water fill this magical interdimensional device?
What is the tidal phenomenon?
The strange life of the 'black blood' tribe living on the world's highest freshwater lake
Plasma fusion engine could enable intergalactic travel
US successfully transmits solar power from space to Earth
5 reasons why flash floods and landslides devastated the northern mountainous region
A series of photos that will surprise you with the true beauty of the Qing Dynasty's Fujin and Princesses
Useful software
New technology
Science invention
Computer science
AI - Artificial intelligence
Scientific application
Environment
Animal world
Biology
Alien
Doomsday
History
Space science
Archeology
Oceanography
World Heritage
World celebrity
Conquer Mars
1001 mystery
Health
Antibiotic resistance
Flu epidemic
Cancer
Food safety
Science Events
Scientific works
Science story
Videos
Photo library
Funny corner