Scientists reveal new toxin that damages the gut

Scientists at La Trobe University have discovered how a diarrhea-causing strain of bacteria uses "molecular scissors" to cut open and destroy gut cells, leading to severe illness and sometimes death.

Why males pack a powerful punch

Elk have antlers. Rams have horns. In the animal kingdom, males develop specialized weapons for competition when winning a fight is critical. Humans do too, according to new research from the University of Utah. Males' upper ...

Scientists solve fish evolution mystery

A University of Wyoming researcher is part of an international team that has discovered how more than 700 species of fish have evolved in East Africa's Lake Victoria region over the past 150,000 years.

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