DIOXIN IN VIETNAM
During the 1960s, US forces fighting in Vietnam showered the country with twice as much dioxin-containing weedkiller, such as the notorious Agent Orange, as previously thought.
The revised figures, which are published this week in Nature (vol 422, p 681), suggest that compared with previous estimates US Air Force planes dumped an additional 7 million litres of toxic weedkiller on Vietnam, much of it directly onto US ground troops and Vietnamese civilians.
MARS AND PLUTO
NASA has chosen the landing sites for its two Mars Explorer spacecraft, due for launch in May and June. The first will…
