Fossil evidence reveals a time when insects reached sizes that seem almost impossible today. Scientists say higher oxygen levels and harsh environmental pressures allowed bugs to grow into dominant ...

Despite differences in shape and size all insects are characterized by a body organization that includes three units: a head, thorax and abdomen (panels A-B). In contrast all spiders (and other ...

An 82-year-old man from Australia with a lifelong passion for fossils but no formal training in paleontology has helped scientists challenge a long-standing idea about how a tiny but widespread group ...