Lymphomas are cancers of the lymphatic system, a network of vessels which form part of the body's immune system, and carry other infection-fighting cells called "lymphocytes", as well as draining dead cells away from the tissues.

BBC: The drug targets cancer cells directly

Instead of using aircraft-borne chemicals as seeds, the researchers propose spraying seawater from unmanned, wind-powered, satellite-controlled vessels that would cruise the latitudes where hurricanes form since droplets of brine have a similar effect to dry ice and silver iodide.

ECONOMIST: Fiddling with clouds could help tame hurricanes

The Helix Producer will form part of a new collection system involving a so-called floating riser and four vessels which will be able to disconnect and reconnect quickly, reducing the time lost when collection is halted because of rough seas.

BBC: Gulf oil spill reaches Texas as tar balls wash ashore