Making sense of string theory | Brian Greene

http://www.ted.com In clear, nontechnical language, string theorist Brian Greene explains how our understanding of the universe has evolved from Einstein’s notions of gravity and space-time to superstring theory, where minuscule strands of energy vibrating in 11 dimensions create every particle and force in the universe. (This mind-bending theory may soon be put to the test at the Large Hadron Collider in Geneva).... Read More إقرأ المزيد | Share it now!

Ernest Madu: Bringing world-class health care to the poorest

http://www.ted.com Dr. Ernest Madu runs the Heart Institute of the Caribbean in Kingston, Jamaica, where he proves that — with careful design, smart technical choices, and a true desire to serve — it’s possible to offer world-class healthcare in the developing world. Listen for some eye-opening statistics on heart disease, which is as ruthless a killer in poorer nations as in richer ones.... Read More إقرأ المزيد | Share it now!