Is it true that Earth days were roughly 22 hours long 600 million years ago? If humans establish an indefinitely self-sustaining colony on Mars and we lose the ability to return, how long will it be before Martians to b...
Find fun things to do in Niagara Falls Canada, take full advantage of the Falls attractions experience. Sail up to the brink of the Falls, walk behind them, and fly over them in a helicopter. Clifton Hill Skywheel.
Niagara Falls, Ontario. The famous horseshoe-shaped waterfalls have intrigued visitors from around the world for decades. Living up to their reputation, the Falls are an extraordinary site. Cruise aboard the Voyage to the Falls Boat Ride for a wet and wild view; descend into tunnels to observatory decks on the Journey Behind the Falls; and ascend up the Skylon Tower for incredible aerial views.