A recent study has revealed that climate change is killing penguin chicks from the world's largest colony of Magellanic penguins.  We'll talk with Dee Boersma, a professor of biology at the University of Washington who led this 27 year study on today's One on One segment. Also… A group of mayors from the world's largest cities met in South Africa this past week to discuss the impact of climate change. A new study has found that high blood pressure in people as young as 18 increases their risk for heart disease. Tech giant Microsoft has a new CEO. This past week Facebook, one of the world’s most popular social media websites marked its 10th anniversary. It is winter in the Northern Hemisphere and severe winter weather is affecting the lives of people in many parts of the world. Researchers are trying to find out why people who are blind have a better sense of hearing than those who can see.  They're hoping they can apply what they learn to developing a new treatment for hearing loss.