51.   The scientists also tested eight samples taken from people with brain disease caused by something else.

52.   Wachs said scientists will now test whether they can hit moving missiles.

53.   Wachs said scientists will test now whether they can hit moving missiles.

54.   American and French scientists will test the Russian ice core samples for gases later this year, he said.

55.   British scientists also are testing a male contraceptive but it must be injected.