Acanthosis nigricans can affect otherwise healthy people or can be associated with internal malignancy, endocrine abnormalities, or obesity. Some cases have a familial tendency. Acanthosis ...

Begonia can be annuals, evergreen or deciduous perennials or shrubs, with fibrous, tuberous or rhizomatous roots and usually asymmetrical leaves, often strikingly patterned, and small or large flowers ...

A deciduous, branching shrub, up to around 3m high, with downy young stems, and dark green, serrated leaves covered with fine hairs on the top surface and smooth underneath. Catkins are produced ...

Scientists from Australia have discovered a hotspot in the eastern Indian Ocean where unusually high numbers of natural hybrid fishes occur. The team from the ARC Centre of Excellence for Coral Reef ...