Raise your hand if you don’t quite understand this whole financial crisis. It has been going on for seven months now, and many people probably feel as if they should understand it. But they don’t, not really. The part about the housing crash seems simple enough. With banks whispering sweet encouragement, people bought homes they couldn’t afford, and now they are falling behind on their mortgages. But the overwhelming majority of homeowners are doing just fine. So how is it that a mess concentrated in one part of the mortgage business - subprime loans - has frozen the credit markets, sent stock markets gyrating, caused the collapse of Bear Stearns, left the economy on the brink of the worst recession in a generation and forced the Federal Reserve to take its boldest action since the Depression? I’m here to urge you not to feel sheepish. This may not be entirely comforting, but your confusion is shared by many people who are in the middle of the crisis. ‘We’re exposing parts of the capital markets that most of us had never heard of,’ Ethan Harris, a top Lehman Brothers economist, said last week. Robert Rubin, the former […]
Progress on the road to regenerating major body parts, salamander-style, could transform the treatment of amputations and major wounds A salamander’s limbs are smaller and a bit slimier than those of most people, but otherwise they are not that different from their human counterparts. The salamander limb is encased in skin, and inside it is composed of a bony skeleton, muscles, ligaments, tendons, nerves and blood vessels. A loose arrangement of cells called fibroblasts holds all these internal tissues together and gives the limb its shape. Yet a salamander’s limb is unique in the world of vertebrates in that it can regrow from a stump after an amputation. An adult salamander can regenerate a lost arm or leg this way over and over again, regardless of how many times the part is amputated. Frogs can rebuild a limb during tadpole stages when their limbs are first growing out, but they lose this ability in adulthood. Even mammalian embryos have some ability to replace developing limb buds, but that capacity also disappears well before birth. Indeed, this trend toward declining regenerative capacity over the course of an organism’s development is mirrored in the evolution of higher animal forms, leaving […]
WASHINGTON — Pity America’s poor civil libertarians. In recent weeks, the papers have been full of stories about the warehousing of information on Americans by the National Security Agency, the interception of financial information by the CIA, the stripping of authority from a civilian intelligence oversight board by the White House, and the compilation of suspicious activity reports from banks by the Treasury Department. On Thursday, Justice Department Inspector General Glenn Fine released a report documenting continuing misuse of Patriot Act powers by the FBI. And to judge from the reaction in the country, nobody cares. A quick tally of the record of civil liberties erosion in the United States since 9/11 suggests that the majority of Americans are ready to trade diminished privacy, and protection from search and seizure, in exchange for the promise of increased protection of their physical security. Polling consistently supports that conclusion, and Congress has largely behaved accordingly, granting increased leeway to law enforcement and the intelligence community to spy and collect data on Americans. Even when the White House, the FBI or the intelligence agencies have acted outside of laws protecting those rights - such as the Foreign Intelligence Surveillance Act - the […]
Both genetic and environmental factors affect people’s risk of developing post-traumatic stress, according to new research that illustrates how nature and nurture combine to shape health and behaviour. A particular genetic variant makes people much more susceptible to post-traumatic stress disorder (PTSD) after harrowing experiences, but only if they have also had an abusive childhood, scientists in the United States have discovered. The findings add to a growing consensus that the debate about whether mental health, personality and behaviour are driven by nature or nurture is founded on a misconception. They indicate strongly that genes and the environment are not mutually exculsive forces, but rather work together to influence human development. PTSD is a serious anxiety disorder that develops among people who witness or experience unpleasant events, such as war, murders, terrorist attacks or natural disasters. It commonly leads to nightmares, insomnia, flashbacks, mood swings and depression, and can severly impair people’s ability to live a normal life. Not everybody who experiences severe trauma develops PTSD, and the risk is known to be influenced by genetics. Studies of twins who served in Vietnam showed that identical pairs, who share all their genes, are more likely […]
Democrats who worry that Barack Obama is untested can put their concerns to rest. The inflammatory rhetoric of the Rev. Jeremiah Wright has confronted Obama with the most severe test of his presidential campaign and, quite likely, of his public career. He is now facing a full-blown and fast-moving political crisis in which his reputation as a leader with a singular ability to transcend racial divisions and unite Americans is in jeopardy. A convergence of factors - a media firestorm, a Democratic rival eager to exploit his stumbles and, most of all, a Republican opposition eager to rough up the man they expect to face in the general election - have raised the stakes to new heights for Obama with the speech he will deliver in Philadelphia on Tuesday morning. A successful address would go a long way toward answering Hillary Rodham Clinton’s complaint that Obama has never shown he can handle the rough-and-tumble nature of modern political combat. A failure could leave many of the white independent voters - a key group behind Obama’s swift rise in national politics - doubting whether he is really the bridge-builder and healer he has portrayed himself to […]