Why Chimpanzees Have Big Testes, and Mandrills Have Small Ones
Why Chimpanzees Have Big Testes, and Mandrills Have Small Ones
For primates, males’ fancier ornaments are linked with smaller testes, according to a new comparative study.
Why Chimpanzees Have Big Testes, and Mandrills Have Small Ones
Why Chimpanzees Have Big Testes, and Mandrills Have Small Ones

For primates, males’ fancier ornaments are linked with smaller testes, according to a new comparative study.

For primates, males’ fancier ornaments are linked with smaller testes, according to a new comparative study.

animal rights, evolution
Why Chimpanzees Have Big Testes, and Mandrills Have Small Ones
Why Chimpanzees Have Big Testes, and Mandrills Have Small Ones
Katarina Zimmer | Apr 16, 2019
For primates, males’ fancier ornaments are linked with smaller testes, according to a new comparative study.
Opinion: Transparency Is Critical to Defend Animal Research
Opinion: Transparency Is Critical to Defend Animal Research
Cindy Buckmaster | Apr 11, 2019
Research organizations should start sharing with the public information, stories, photos, and videos on how animals are cared for and used in science.
Animals in North Dakota Died from Chicxulub Asteroid in Mexico
Animals in North Dakota Died from Chicxulub Asteroid in Mexico
Chia-Yi Hou | Apr 1, 2019
Fossils reveal the quick death of plants and animals from a massive surge of water after the impact 66 million years ago, which is thought to have spelled the demise of dinosaurs.
Scientists Push for a Moratorium on Human Germline Editing
Scientists Push for a Moratorium on Human Germline Editing
Ashley Yeager | Mar 13, 2019
After the reported birth of CRISPRed babies in China, experts want to take time to consider the scientific, social, ethical, and philosophical consequences of editing heritable human DNA.
Brain Surface Area Reveals Overlap in Genes, Intelligence, Evolution
Brain Surface Area Reveals Overlap in Genes, Intelligence, Evolution
Carolyn Wilke | Mar 4, 2019
An analysis of the contours of more than 600 kids’ brains points to links between cerebral surface area and heritability in regions of the brain important in cognition.  
Opinion: Individuals Are Greater Than the Sum of Their Parts
Opinion: Individuals Are Greater Than the Sum of Their Parts
Itzhak Mizrahi, Fotini Kokou | Mar 1, 2019
The study of evolution requires consideration of organisms’ microbiomes.
Prehistoric Microbes Inhabit an Oasis in the Northern Mexican Desert
Prehistoric Microbes Inhabit an Oasis in the Northern Mexican Desert
Diana Kwon | Mar 1, 2019
The blue lagoons of the Cuatro Ciénegas Basin provide a glimpse into the planet’s ancient past.
Primordial RNA May Have Contained Inosine
Primordial RNA May Have Contained Inosine
Catherine Offord | Mar 1, 2019
The discovery that the adenosine derivative aids self-replication adds weight to the theory that life on Earth originated from a mixture of RNA molecules.
Archaea CRISPR Systems Grab DNA Memories During Interspecies Mating
Archaea CRISPR Systems Grab DNA Memories During Interspecies Mating
Carolyn Wilke | Mar 1, 2019
When different archaeal species mate, their CRISPR systems interact in ways that may influence their evolution.
DNA’s Coding Power Doubled
DNA’s Coding Power Doubled
Ruth Williams | Feb 21, 2019
All life on Earth uses a genetic code based on four nucleotides. Now, scientists have created one with eight.