30 articles from SATURDAY 5.10.2019

NASA's Mars 2020 rover tests descent-stage separation

In this picture from Sept. 28, 2019, engineers and technicians working on the assembly and testing of the Mars 2020 spacecraft look on as a crane lifts the rocket-powered descent stage away from the rover. They've just completed a successful separation test at NASA's Jet Propulsion Laboratory in Pasadena, California.

Economic impacts of colony collapse disorder

BOZEMAN - The work of a Montana State University professor examining the economic impacts of colony collapse disorder among commercial honeybees was published in the Journal of the Association of Environmental and Resource Economists last month.

Next-generation single-photon source for quantum information science

Researchers have built what they believe is 'the world's most efficient single-photon source.' And they are still improving it. With planned upgrades, the apparatus could generate upwards of 30 photons at unprecedented efficiencies. Sources of that caliber are precisely what's needed for optical quantum information applications.

Treating pulmonary embolism: How safe and effective are new devices?

A new scientific statement identifies the risks and benefits of novel interventional devices compared to anticoagulation alone in the treatment of patients with pulmonary embolism. Authors conclude there is little data -- particularly, as it pertains to the treatment of patients with 'intermediate-risk PE' -- that suggests these interventional approaches are more safe and effective than the use of...

Anesthetizing fish may affect research outcomes

Fish use colorful patterns to signal to each other, including advertising for mates and warding off rivals. Studying the relationship between color and behavior sometimes entails anesthetizing and photographing the fish, but anesthetics may alter coloration, influencing the traits researchers are trying to study.