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So suggests new research that tracked changes in two genes thought to help regulate brain growth, changes that appeared well after the rise of modern humans 200,000 years ago.

That the defining feature of humans — our large brains — continued to evolve as recently as 5,800 years ago, and may be doing so today, promises to surprise the average person, if not biologists.

Students will independently research and prepare ‘case studies’ for different invasive species which can be used as a basis for wider classroom discussion and collaboration.

C) dating usually want to know about the radiometric[1] dating methods that are claimed to give millions and billions of years—carbon dating can only give thousands of years.

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The Engineering in Nature Challenge inspires students to explore engineering principles while developing a greater connection to nature.

Carbon has unique properties that are essential for life on Earth.

Familiar to us as the black substance in charred wood, as diamonds, and the graphite in “lead” pencils, carbon comes in several forms, or isotopes.

It makes no sense at all if man appeared at the end of billions of years.

We will deal with carbon dating first and then with the other dating methods.