The spread between the cost of borrowing for governments and that for Banks has widened sharply in recent weeks. That suggests investors are warier than ever of lending to the banking system.
At around age 60, "muscles really start to break down," say Kathryn Starr, an aging researcher, "and because of that, the protein needs of an older adult actually increase."
Various interventions, such as infection-fighting drugs, can increase a population's average survival time, but only approaches that slow the body's rate of aging will increase the maximum lifespan.
It offers free online classes from Harvard, MIT and the University of California-Berkeley; this fall, it will add classes from Wellesley, Georgetown and the University of Texas.