Invasive Species Could Kill Nearly Half of U.S. Forests

discovermagazine.com – Around 40 percent of forests in the contiguous U.S. are at risk from invasive species, along with the millions of tons of carbon they soak up every year.

Source: Songlin Fei, Randall S. Morin, Christopher M. Oswalt, Andrew M. Liebhold. Biomass losses resulting from insect and disease invasions in US forests. Proceedings of the National Academy of Sciences, 2019.

NASA Releases First Science Results from Parker Solar Probe Mission

sci-news.com – The four instruments of NASA’s Parker Solar Probe, a robotic spacecraft designed to explore the Sun’s atmosphere, have returned unprecedented science data from near our star, culminating in new discoveries published this week in a series of four papers in the journal Nature.

Source: J. C. Kasper, et al. Alfvénic velocity spikes and rotational flows in the near-Sun solar wind. Nature, 2019.

NASA Releases First Science Results from Parker Solar Probe Mission

sci-news.com – The four instruments of NASA’s Parker Solar Probe, a robotic spacecraft designed to explore the Sun’s atmosphere, have returned unprecedented science data from near our star, culminating in new discoveries published this week in a series of four papers in the journal Nature.

Source: D. J. McComas, et al. Probing the energetic particle environment near the Sun. Nature, 2019.

NASA Releases First Science Results from Parker Solar Probe Mission

sci-news.com – The four instruments of NASA’s Parker Solar Probe, a robotic spacecraft designed to explore the Sun’s atmosphere, have returned unprecedented science data from near our star, culminating in new discoveries published this week in a series of four papers in the journal Nature.

Source: S. D. Bale, et al. Highly structured slow solar wind emerging from an equatorial coronal hole. Nature, 2019.

Astronomers surprised to find a star similar to our sun devouring the atmosphere of a giant planet

cbc.ca – About 1,500 light years away lies the remnant of a star that was once like our own, and it's providing astronomers with clues as to what might happen in our solar system after the sun dies.

Source: Boris T. Gänsicke, et al. Accretion of a giant planet onto a white dwarf star. Nature, 2019.

How an Icy Moon of Saturn Got Its Stripes

nytimes.com – Scientists have developed an explanation for one of the most striking features of Enceladus, an ocean world that has the right ingredients for life.

Source: Douglas J. Hemingway, Maxwell L. Rudolph, Michael Manga. Cascading parallel fractures on Enceladus. Nature Astronomy, 2019.

New Mammal Fossil May Show How Ear Bones Evolved from Jaw Bones

the-scientist.com – An ancient animal’s hammer, anvil, and stirrup bones are at the base of the jaw but completely detached from it.

Source: Fangyuan Mao, et al. Integrated hearing and chewing modules decoupled in a Cretaceous stem therian mammal. Science, 2019.

NASA Releases First Science Results from Parker Solar Probe Mission

sci-news.com – The four instruments of NASA’s Parker Solar Probe, a robotic spacecraft designed to explore the Sun’s atmosphere, have returned unprecedented science data from near our star, culminating in new discoveries published this week in a series of four papers in the journal Nature.

Source: R. A. Howard, et al. Near-Sun observations of an F-corona decrease and K-corona fine structure. Nature, 2019.

Artificial Neurons Fire in Life-Like Patterns

the-scientist.com – The silicon chips receive and send electrical signals, recreating activity from neurons in the rat brain that play a role in breathing and thinking.

Source: Kamal Abu-Hassan, et al. Optimal solid state neurons. Nature Communications, 2019.

Single-celled organism can ‘change its mind’ despite lacking a nervous system

zmescience.com – It took more than 100 years to confirm that single-celled organisms are capable of hierarchical decision making.

Source: Joseph P. Dexter, Sudhakaran Prabakaran, Jeremy Gunawardena. A Complex Hierarchy of Avoidance Behaviors in a Single-Cell Eukaryote. Current Biology, 2019.

Glacial meltwater helped early animals survive Snowball Earth

upi.com – New scientific findings suggest glacial meltwater helped eukaryotes survive Earth's most extreme ice age, so-called Snowball Earth.

Source: Maxwell A. Lechte, et al. Subglacial meltwater supported aerobic marine habitats during Snowball Earth. Proceedings of the National Academy of Sciences, 2019.