The CDC and NIAID, in conjunction with the U.S. Department of Homeland Security, evaluate the potential threat from various microorganisms and toxins and classify them into three categories. Category ...

Biological toxins are defined as any toxic substances occurring in nature produced by animals, plants or microbes (pathogenic bacteria), such as bacteria, fungi, flowering plants, insects, fish, ...

For taxonomists, days often start – and sometimes end – with the question: what’s that? Whether you’re an entomologist, staring at a new species of riffle bug from a rainforest stream, or a ...

What are the differences between biological and chemical weapons? The differences between biological and chemical weapons lie in their makeup, dissemination, and effects. Here are some typical ...

Deputy Attorney General Jeffrey Rosen suggests that coronavirus can be classified as a biological agent and that misuse of the virus can fall under terrorism statutes. Got a confidential news tip? We ...

The September 11 terrorist attacks on the World Trade Center and the Pentagon made starkly clear how vulnerable Americans are to terrorism at home. But as devastating as those attacks were, the ...

Introduction: Carving nature at its joints, or Why birds are not dinosaurs and men are not apes -- Part I. The Interrelationships of Organisms: 1. What this book is about -- 2. Classification -- Part ...