NAIROBI, Kenya (AP) — What began as a childhood hobby more than six decades ago has led to what might be Africa's largest butterfly collection in a suburb of Kenya's capital. Steve Collins, 74, was ...

Mark Williams was out with his butterfly net in his favorite South African mountain range when a flutter of gray-blue wings sailed by. They were almost as small and nondescript as the other gray-blue ...

The Nature Index tracks primary research articles from 145 natural-science and health-science journals, chosen based on reputation by an independent group of researchers. The Nature Index provides ...

In a study of a species of African butterfly, researchers have discovered a previously undescribed molecular mechanism of how the sex of an embryo is initially specified. In a study of a species of ...

NAIROBI, Kenya (AP) -- What began as a childhood hobby more than six decades ago has led to what might be Africa's largest butterfly collection in a suburb of Kenya's capital. Steve Collins, 74, was ...

The leader of the net-toting group is Mark Williams, who has traveled widely, fending off baboons and dodging hippos and snakes, in search of his obsession. ark Williams was out with his butterfly net ...