It depends on the scientist. Some do, and some do not.
yes
true
Very true and in fact by Very clever scientists it will in 10 days time. -
True
A true free market system comprises buyers and sellers who are fully informed but also have no individual control over price. There is no such thing as a true free market economy anywhere in the world.
true
cantonese food is popular all over the world
No. There are millions of stars, but out solar system has only one star, the Sun.
No, it is not true.
true
No one knows for sure when the world will end. In the early 2000's (2000-2005) scientists thought the world was going to end. Obviously that was not true. Now scientists think the world will end on December 12, 2012. We aren't sure if this is true but this theory is based off of the ancient Mayan's calendar.
Yes true.