Image of the Day: Stick and Leaf Insects
Image of the Day: Stick and Leaf Insects
The first phylogenomic tree of these insects shows their diversification occurred after they split into Old and New World groups.
Image of the Day: Stick and Leaf Insects
Image of the Day: Stick and Leaf Insects

The first phylogenomic tree of these insects shows their diversification occurred after they split into Old and New World groups.

The first phylogenomic tree of these insects shows their diversification occurred after they split into Old and New World groups.

evolution
Koala Immune Response to Genome-Inserting Retroviruses Identified
Koala Immune Response to Genome-Inserting Retroviruses Identified
Emily Makowski | Oct 11, 2019
Small RNAs called piRNAs provide a first line of defense against the viruses.
When Is an Endosymbiont an Organelle?
When Is an Endosymbiont an Organelle?
Ruth Williams | Oct 3, 2019
The finding that a bacterium within a bacterium within an animal cell cooperates with the host on a biosynthetic pathway suggests the endosymbiont is, practically speaking, an organelle.
Image of the Day: Poison Tolerance
Image of the Day: Poison Tolerance
Emily Makowski | Oct 3, 2019
Genetically engineered Drosophila withstand toxins common in monarch butterflies’ diet.
Rabbit Study May Hint at Origin of Female Orgasm in Humans
Rabbit Study May Hint at Origin of Female Orgasm in Humans
Catherine Offord | Oct 1, 2019
It could be a throwback to a mechanism that induces ovulation during sex, researchers propose, but not everyone thinks the results can be extrapolated to people.
The Narluga: New Insights from Old Bones
The Narluga: New Insights from Old Bones
Ashley Yeager | Oct 1, 2019
DNA analysis of a bizarre, 30-year-old whale skull serves as a reminder of the secrets that museum specimens keep about the natural world.
Image of the Day: Red-Feathered Finches
Image of the Day: Red-Feathered Finches
Emily Makowski | Sep 30, 2019
Scientists uncover a potential reason why redder house finches have better health.
Arsenic-Resistant Nematodes Found in Mono Lake
Arsenic-Resistant Nematodes Found in Mono Lake
Abby Olena | Sep 26, 2019
Researchers recovered eight species from the salty, alkaline environment—increasing the known biodiversity of animals in the California lake five-fold.
Newly Described Electric Eel Has Strongest Voltage Yet Measured
Newly Described Electric Eel Has Strongest Voltage Yet Measured
Kerry Grens | Sep 10, 2019
The same study also finds there are three species of Electrophorus, rather than one.
Image of the Day: Gene-Edited Reptiles
Image of the Day: Gene-Edited Reptiles
Nicoletta Lanese | Sep 4, 2019
Scientists injected unfertilized anole lizard eggs with CRISPR-Cas9 to produce albino offspring.