How a praying mantis says ‘boo!’

From a distance, the dead leaf praying mantis resembles its namesake: brown, crispy and still. Inch a little closer and it looks the same. But go even closer — too close — and a transformation occurs. The mantis whirls around, spreads its black-patterned wings and puts its arms behind its head in a pose reminiscent of Edvard Munch’s “The Scream,” showing off shocking red undersides.

Researchers predict location of candidate for mysterious dark energy

Astronomers have known for two decades that the expansion of the universe is accelerating, but the physics of this expansion remains a mystery. Now, a team of researchers at the University of Hawaii at Manoa has made a novel prediction — the dark energy responsible for this accelerating growth comes from a vast sea of compact objects spread throughout the voids between galaxies. This conclusion is part of a new study published in The Astrophysical Journal.

Volcano Watch: On the surface of Kilauea’s new landscape, a story is told

Kilauea’s 2018 summit collapse dramatically transformed the geometry and appearance of Halema‘uma‘u crater and Kilauea caldera. Last week’s “Volcano Watch” article described how the 2018 events impacted the magma plumbing system beneath the surface of Kilauea’s summit. This week, we’ll explore how the 2018 events impacted the geologic deposits on the surface.

Israel signs pacts with 2 Arab states: A ‘new’ Mideast?

WASHINGTON — Israel on Tuesday signed historic diplomatic pacts with two Gulf Arab states at a White House ceremony that President Donald Trump declared will mark the “dawn of a new Middle East,” casting himself as an international peacemaker at the height of his reelection campaign.