Scientists discovered a population of cells that can start the process of programmed cell death, survive it, and then help rapidly rebuild damaged tissue. Their descendants become far more resistant ...

A complete lesson covering sections 4.1.1.1 and 4.1.1.2 of the AQA Combined Science specification, focusing on eukaryotic and prokaryotic cells and plant and animal cells. The lesson begins with a KS3 ...

Make complex biology concepts easier to see, understand, and remember. This full-color Biology Visual Learning Guide is designed for Grade 8 and middle school science students who benefit from clear ...

Dinosaurs are often depicted in dull shades of brown and gray, but fossil evidence is changing that image. Scientists have discovered microscopic pigment structures called melanosomes preserved in ...

The work challenges the assumption that all life descended from one free-living cell. Instead, it suggests that two microbial lineages, the bacteria and archaea, evolved independently from a ...

Scientists say they have built a cell from scratch for the first time that can feed, grow and replicate like a natural cell. This breakthrough in synthetic biology could usher in an era of ...

As blood stem cells age, their lysosomes become overactive and damaged, triggering inflammation and weakening the body’s ability to regenerate healthy blood and immune cells. By calming this cellular ...

In the oceans and on land, scientists are discovering rare, transitional organisms that bridge the gap between Earth’s simplest cells and today’s complex ones. By Carl Zimmer A flurry of new studies ...

Let’s say it’s 2036, and scientists are working on a new class of drugs. These medications are mirror-image versions of the molecules your body uses to fight disease. Their big advantage is that ...

John M. Archibald is in the Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4H7, Canada, and also at the Institute for Comparative Genomics, Dalhousie ...

Cells are the basic building blocks of life—the smallest units that can do all the jobs a living thing needs. Most cells fit into two groups: prokaryotes and eukaryotes. The most significant ...