Tampa microbiologist uses model airplane to test for African dust

When government microbiologist Dale Griffin revs up his quarter-scale, remote-controlled Piper Cub aircraft and lofts it 1,000 feet above Largo next month, it won't be as a model airplane hobbyist. Each week for months, he'll check the skies above the Tampa Bay area for bacteria, viruses and chemicals hitching intercontinental rides on specks of African dust.
Darwin was fascinated by airborne African dust, some of which fell onto HMS Beagle.