Overview: 2010/04/02 Headlines: EPA Places New Limits on Mountaintop Removal; US Limits Greenhouse Emissions in Cars; Murderer of Abortion Provider Dr. George Tiller Sentenced to Life Term; Israel Threatens New Assault on Gaza Strip; Karzai Accuses Ex-UN Official of Steering Electoral Fraud; Amazonian Land Activist Killed in Brazil; Report: Africa Lost $1.8T to Illegal Outflows; US Alters Airport Screening Rules; Justice Dept. Sues KBR for Security Billing; Army Secretary: No Easing of Don't Ask, Don't Tell; US Bankruptcies at 4-Year High; California Probe Clears ACORN of Unlawful Activity; Haitian Earthquake Survivors Freed from Immigration Jails