A new network of high-speed lines across Britain could speed rail passengers between London and Scotland in two and a half hours.
Senator John Kerry has achieved easy victories in the latest state caucuses to find a Democrat challenger to President Bush.
Leading scientists claim a law drafted in the wake of the Alder Hey organ scandal could blight legitimate research projects.
Former UN chief weapons inspector Hans Blix has said Britain and the US dramatised intelligence information to boost the argument for the Iraq war.
Afghanistan is hosting a two day forum on its illegal drug industry.
President George W. Bush has defended the US invasion of Iraq as a "war of necessity".