Earth’s magnetosphere might not protect us from superstorms after all

Graphic showing the interaction of the solar wind and the magnetosphere, along with the locations of the satellites used in the study, and the graph showing the corrected response. Credit - NASA / N. Sivadas et al.
Graphic showing the interaction of the solar wind and the magnetosphere, along with the locations of the satellites used in the study, and the graph showing the corrected response. Credit – NASA / N. Sivadas et al.

Science seems like a straightforward endeavor. You come up with a hypothesis, collect data to prove or disprove it, and analyze that data to see whether the hypothesis is right. But anyone who actually does science will tell you that it is often not that straightforward. One of the most common complexities is data analysis.

A new paper in Nature suggests that one such complexity, known as regression to the mean, might be causing us to massively underestimate how severe solar storms can be.

The interaction between the solar wind and Earth’s magnetosphere can be thought ...

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Blood proteins may flag disability risk years before loss of independence

Towards early disability prediction with blood protein biomarkers
Researchers identified two blood proteins—beta-2-microglobulin (B2M) and cystatin C—that predict future disability in community-dwelling adults aged 85 years and older. The findings, validated in independent Japanese and Italian aging cohorts, suggest that blood-based biomarkers could support earlier identification of older adults at risk of losing independence and guide timely preventive interventions. Credit: Dr. Yusuke Osawa from Keio University, Japan

Japan has one of the world’s fastest-aging populations, but maintaining independence into very old age remains a growing public health challenge...

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Robots learn new skills from a single video—in just 29 seconds

Framework could teach robots new skills from a single video
Robots acquire manipulation skills in seconds from a single human video. (A) Current methods teach a robot new skills through a cumbersome training-time loop that is costly and slow, and erodes previously mastered skills. HOST instead acquires skills at inference time, each from a single human video, averaging 29 seconds, while retaining its previously mastered skills. (B) Skill acquisition from a single human video confronts a structural mismatch between video demonstration and execution. Temporal asynchrony between the two decouples the prediction target from the video demonstration, while state discrepancies hinder the translation of the observed behavior into action...
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ALMA uncovers sulfur for the first time around a rare class of supergiant star

Astronomers have discovered a chemically rich collection of sulfur-bearing molecules surrounding the rare massive star HD 87643. The observations include the first detection of sulfur monoxide and sulfur dioxide around a B[e] supergiant. The paper was published in The Astrophysical Journal Letters on July 1.

Rare and old
B[e] supergiants, or sgB[e], are rare, evolved massive stars that have moved past their main hydrogen-burning phase. They are notable for distinctive emission lines—hence the “[e]” in their name—including rare “forbidden” lines produced by the surrounding gas and dust, along with an infrared glow far more intense than that of ordinary B-type stars.

As these stars approach the final stages of their lives, they shed enormous amounts of material, building up mes...

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