Time travel is not possible, so it's not dangerous at all.
You can use both variations. Wiktionary lists "time-travel" as an alternative spelling to "time travel", so it seems "time travel" is the more common version.
Any link between time travel and chemistry.
He never even mentions time travel.
No, time travel isn't a proper noun. It is a precise noun.
Go to a shrine in Ilex forest and after that you time travel
Travel Is Dangerous was created in 2005.
why is it dangerous to travel on the roof of a bus
No.
Space travel is statistically the most dangerous form of travel. Overall odds of fatality are approximately 1:120.
Dangerous!
no it is not dangerous
Statistically a motorcycle is the most dangerous.
no
Not really. There are some that safe to travel to.
No, Belize is a very safe travel destination.
It isn't dangerous to travel in a double decker bus.
Perhaps, but so far, nobody found a way to change the past, with time travel or otherwise. IF time travel were possible - and that's a big "if" - it would also be risky. For a start, it might fall into the wrong hands.Depending on the assumptions on how, exactly, time travel works, going back and changing the past might be quite dangerous, as any science fiction fan knows.