Why don't commercial planes fly higher into space?
the higher the flight, the more fuel-efficient the aircraft is, the faster and quieter it flies.
but they can't fly into space because of some design limitations.
Rumored footprints from demons around the world
one of the supposed traces of the devil is more meaningful to archaeologists than the legend of the locals.
The 'invisible' mega yacht is worth $ 110 million
the high-class yacht named fata morgana is designed to blend into the polar ice landscape by pretending to be a giant iceberg.
'Batman' has appeared in ancient Mayan legends and is served as a god
in 2500 bc, before dc comics invented batman, the ancient mayans worshiped batman
Why is gossip so tempting?
everyone knows that we should not speak ill of others, but why is this little temptation but we can not overcome?
Why do leaves on the last fall?
in temperate regions, whenever autumn comes, the trees change color from green to yellow, finally unloading this shirt, naked to welcome the coming winter.
Why is it so hard to make eye contact when chatting?
eye contact is an important element when expressing something.
but it is very difficult, isn't it?
Why are naughty kids always happy?
naughty children will know how to explore the world.
they are also not afraid to express emotions, very independent and creative.
How to read the fat, sugar and salt content on a food nutrition label
here's an expert guide so you can make healthy, healthier food choices.
Decipher the mystery behind the 8 largest Chinese ancestors
in china, they are descended from matriarchal society.
the children at that time only knew their mother, not their father.
If a global pandemic breaks out, what is your safe place?
what is your last resort for withdrawal if the worst happens?
could it be a sudden global pandemic or some other kind of existential crisis that threatens humanity to extinction?
What would happen if humans were ... 'cold-blooded animals'?
the fact that humans become cold-blooded animals (heat changes) similar to frogs and snakes will make a big breakthrough for the era of space conquest.
besides, each of us will also save a significant cost for eating.
why is that?
The FBI's Art of Identifying Liars: One question is knowing who is dishonest
a very simple question, but the application must be very subtle.
so it's called art?
How big was the moon in the dinosaur era?
as the only natural satellite orbiting the earth's orbit, the moon is tending to get farther and farther away from our planet.
How were biological weapons born?
biological weapons are one of the most primitive weapons, the purest, the oldest but also the most modern in human history.
Ships set records when passing through narrow canals
nearly 1,000 passengers aboard the braemar held their breath as the 22.5-meter ship slowly moved through the corinth canal on october 9.
After 500 years, MIT proved that the bridge design of Leonardo Da Vinci is extremely reasonable
yet another proof of da vinci's genius.