CHINA: SUPER SOLDIERS
This program tells the story of the final thunderous battle of the Napoleonic era featuring stunning excerpts from major feature films, specially filmed authentic reconstruction and re-enactment footage, plus dramatized 'eye-witness' accounts of the battle, it provides a unique record of one of the turning points in world history.
WHAT REALLY KILLED THE DINOSAURS
For
more than 150 million years, dinosaurs dominated Earth. They were so
successful that other animal groups – mammals included – had
little chance of playing anything more than secondary roles.
Then,
65 million years ago, the dinosaurs vanished from the world forever.
Did they meet a quick and catastrophic end, or did they fade away
gradually?
In
the search for answers to what killed the dinosaurs, scientists have
looked beyond fossils. Geological evidence also holds clues and has
contributed to many hypotheses, working explanations of how dinosaurs
may have become extinct.
The
extinction mystery is far from a simple “whodunit.” The same
piece of evidence is sometimes subject to multiple interpretations.
And, as yet, there is no obvious “smoking gun,” no piece of
evidence that strongly supports only one hypothesis while disproving
all others. So what do we know about dinosaur extinction, and how do
we know it?
Scientific
evidence and observation are the building blocks of hypotheses.
Initially, the same evidence and observations may support different
hypotheses. As more evidence becomes available, some hypotheses are
substantiated, others are
disproved, and new ones are formed.
A
dinosaur extinction hypothesis is a testable statement describing
factors that may have contributed to the dinosaurs’ demise and how
long the process may have taken. Evidence, observation, and
experimentation can serve to support or disprove a hypothesis.
Regardless of its ultimate acceptance or rejection, though, a valid
hypothesis provides direction for future scientific inquiry.
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