IN: Is it true that is the grand canyon the biggest canyon in the world?

The Grand Canyon of northern Arizona in the United States, with an average depth of 1,600 m (one mile) and a volume of 4.17 trillion cubic metres, is one of the world's largest canyons. It was among the 28 finalists of the New7Wonders of Nature worldwide poll. (Some referred to it as one of the 7 natural wonders of the world.) Copper Canyon in Chihuahua, Mexico is deeper and longer than the Grand Canyon.

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OUT: no

IN: Is it true that is the movie fool's gold a true story?

Fool's Gold is a 2008 American adventure-romance film from Warner Bros. Pictures about a recently divorced couple who rekindle their romantic life while searching for a lost treasure. The film was directed by Andy Tennant and reunites the How to Lose a Guy in 10 Days stars Matthew McConaughey and Kate Hudson.

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OUT: no

IN: Is it true that can there be twins in one yolk sac?

Monoamniotic twins are identical twins that share the same amniotic sac within their mother's uterus. Monoamniotic twins are always identical, always monochorionic and are usually termed Monoamniotic-Monochorionic (''MoMo'' or ''Mono Mono'') twins. They also share the placenta, but have two separate umbilical cords. Monoamniotic twins develop when an embryo does not split until after formation of the amniotic sac, at about 9-13 days after fertilization. Monoamniotic triplets or other monoamniotic multiples are possible, but extremely rare. Other obscure possibilities include multiples sets where monoamniotic twins are part of a larger gestation such as triplets, quadruplets, or more.

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OUT: yes

IN: Is it true that do you have to pay for the dartford bridge?

The crossing had always been tolled, and from 1 April 2003 this became a charge, though since 2008 it has been free from 10 pm to 6 am. An automatic number plate recognition charging scheme (Dart Charge) began in November 2014. As a result, the charge can no longer be paid in cash and the old toll booths have been removed. A residents' scheme is available, offering further discounts for people living near the crossing.

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OUT:
yes