An ongoing epidemic Por Suzel Tunes
Avian flu virus spreading across Brazil came from the coast of Chile or Peru Por Giselle Soares
Yellow fever virus has been circulating uninterrupted in southern Brazil for seven years Por Ricardo Zorzetto
The water hyacinth is the most invasive plant in the world Por Redação
Smart socks for the elderly Por Redação
After the Moon, the Sun Por Redação