DNA’s Coding Power Doubled
DNA’s Coding Power Doubled
All life on Earth uses a genetic code based on four nucleotides. Now, scientists have created one with eight.
DNA’s Coding Power Doubled
DNA’s Coding Power Doubled

All life on Earth uses a genetic code based on four nucleotides. Now, scientists have created one with eight.

All life on Earth uses a genetic code based on four nucleotides. Now, scientists have created one with eight.

DNA barcoding, ecology, evolution
The Mirror Test Peers Into the Workings of Animal Minds
The Mirror Test Peers Into the Workings of Animal Minds
Carolyn Wilke | Feb 21, 2019
Nearly 50 years after its development, only a handful of creatures have passed the self-awareness exam. A new attempt with fish highlights a debate over the test’s use and meaning.
Gene Drive–Equipped Mosquitoes Released into Lab Environment
Gene Drive–Equipped Mosquitoes Released into Lab Environment
Jef Akst | Feb 20, 2019
The large-scale experiments aim to test how the technology would fare in the wild, if deployed to knock down populations of the pests.
Longevity Clues Tucked in Great White Shark Genome
Longevity Clues Tucked in Great White Shark Genome
Ashley Yeager | Feb 19, 2019
Certain adaptations identified in the fish’s DNA linked to wound healing, cancer protection, and a long life.
New Global Trade Route Could Shuttle Invasive Species
New Global Trade Route Could Shuttle Invasive Species
K.V. Venkatasubramanian | Feb 19, 2019
China’s ongoing Belt and Road Initiative passes through areas that are already at risk of swapping organisms.
Ribosomal DNA Can Predict an Animal’s Age
Ribosomal DNA Can Predict an Animal’s Age
Abby Olena | Feb 14, 2019
A clock constructed of rDNA methylation sites can estimate both chronological and biological age across species.
Fossilized Tubes Point to Super-Ancient Mobile Organisms
Fossilized Tubes Point to Super-Ancient Mobile Organisms
Jef Akst | Feb 12, 2019
If the structures identified in a 2.1-billion-year-old rock are really signs of burrowing organisms, it would push back the earliest known mobile organisms by 1.5 billion years.
“Grandmother Hypothesis” Gets Some Support“Grandmother Hypothesis” Gets Some Support
“Grandmother Hypothesis” Gets Some Support
Ashley Yeager | Feb 7, 2019
New studies suggest forebears’ age and physical proximity matter when it comes to their grandkids’ survival.
Image of the Day: Light Show
Image of the Day: Light Show
Carolyn Wilke | Feb 7, 2019
Sea fireflies spew a mucus with a chemical glow to lure mates and avoid being eaten.
Changes in Height Linked to Increased C-section Rates
Changes in Height Linked to Increased C-section Rates
Abby Olena | Feb 6, 2019
Countries with populations whose average adult height grew late last century are more likely to have high rates of babies delivered surgically.