Scientists Can’t Agree on What’s Making Pistachio Trees Sick
Scientists Can’t Agree on What’s Making Pistachio Trees Sick
A new study ignites debate on the cause of pistachio bushy top syndrome, a disease that has crippled farms in California, Arizona, and New Mexico.
Scientists Can’t Agree on What’s Making Pistachio Trees Sick
Scientists Can’t Agree on What’s Making Pistachio Trees Sick

A new study ignites debate on the cause of pistachio bushy top syndrome, a disease that has crippled farms in California, Arizona, and New Mexico.

A new study ignites debate on the cause of pistachio bushy top syndrome, a disease that has crippled farms in California, Arizona, and New Mexico.

gravity, microbiology
Mars Has a Lake of Liquid Water: Study
Mars Has a Lake of Liquid Water: Study
Ashley Yeager | Jul 25, 2018
Radar data indicate that the Red Planet’s southern polar ice sheets cover a 20-kilometer-wide body of water.
Oldest Evidence of Terrestrial Life on a Young Earth
Oldest Evidence of Terrestrial Life on a Young Earth
Anna Azvolinsky | Jul 23, 2018
Microbes were living on land as early as 3.22 billion years ago, fossilized rocks show, 500 million years earlier than previously documented.
Two Fungal Species—One Pathogenic, One Benign—Are Actually the Same
Two Fungal Species—One Pathogenic, One Benign—Are Actually the Same
Sukanya Charuchandra | Jul 19, 2018
Under one name the species is used in food fermentation, and under the other it is a drug-resistant cause of yeast infections.
CRISPR Is Overcome When Viruses Gang Up on Bacteria
CRISPR Is Overcome When Viruses Gang Up on Bacteria
Kerry Grens | Jul 19, 2018
Phages that die during bacterial invasion help other viruses defeat the microbes’ immune responses.
Image of the Day: Going Viral
Image of the Day: Going Viral
Sukanya Charuchandra | Jul 11, 2018
Scientists have found a previously unknown virus in Myanmar.
World First: Human Case of Keystone Virus Identified
World First: Human Case of Keystone Virus Identified
Kerry Grens | Jun 22, 2018
A Florida teenager is the first person with a confirmed infection by the mosquito-borne virus.
Image of the Day: Multiple Choice
Image of the Day: Multiple Choice
Sukanya Charuchandra | Jun 19, 2018
Photosynthesis can happen in more than one way.  
Opinion: Constrain Speculation to Protect the Integrity of Science
Opinion: Constrain Speculation to Protect the Integrity of Science
Mike Klymkowsky | Jun 18, 2018
What we can know about biology before the last universal common ancestor is limited—and we should be circumspect in filling in the gaps.
Dogs in Southern China Host Several Strains of Flu
Dogs in Southern China Host Several Strains of Flu
Sukanya Charuchandra | Jun 6, 2018
They may be a prospective source for an influenza pandemic, researchers warn.