William Schopf, paleobiologist, John Valley, geoscientist: As humans, it’s difficult to take the long view of history because we’re the new kids on the block, having only been around 3 million years or so. Although you may feel old by the time you’re an adult, the reality is that people are a recent development. The first life forms existed long before our arrival, now confirmed as some 3.5 billion years ago.

Associated Press: Researchers in South Africa have unveiled what they call "by far the most complete skeleton of a human ancestor older than 1.5 million years ever found." The skeleton dates back 3.6 million years. Its discovery is expected to help researchers better understand the human ancestor's appearance and movement. "Not only is Africa the storehouse of the ancient fossil heritage for people the world over, it was also the wellspring of everything that makes us human, including our technological prowess, our artistic ability and our supreme intellect,"

Caldwell Esselstyn and co-authors, Cleveland Clinic: Though current medical and surgical treatments manage coronary artery disease, CAD, they do little to prevent or stop it. Nutritional intervention, as shown in this study and others, has halted and even reversed CAD. Diagnostic nuclear medicine, PET, positron emission tomography, plays a key role in documenting these facts.

Vijay Jayaraj, M.Sc. Environmental Science. Research Associate for Developing Countries for the Cornwall Alliance for the Stewardship of Creation: He describes the history of air pollution in developing economies in the United States, United Kingdom and India and explains the difference between discussions about air pollution and claims of man-made climate change. Extreme environmentalists mainly from the United States and Europe demand that India abandon use of fossil fuels. They have their own selfish self-interest at heart. No concern for the economic well being of India and similar countries.

The Y nutrition guide: Following these diet recommendations, plus being physically active and maintaining a healthy weight, can go far in helping prevent cancer. For a simpler rule of thumb, you can also follow the advice of Michael Pollan, author of In Defense of Food: An Eater's Manifesto: "Eat food. Not too much. Mostly plants." According to the American Cancer Society, almost 1.7 million new cancer cases and more than 600,000 cancer-related deaths are projected to occur in the United States this year, 2017.