27 BEITRÄGE
PNAS is one of the world's most-cited and comprehensive multidisciplinary scientific journals, publishing more than 3,500 research papers annually. As the flagship peer-reviewed journal of the National Academy of Sciences (NAS), PNAS serves as an authoritative source of high-impact, original research that spans the biological, physical, and social sciences, with global reach and open submission to researchers worldwide.
Recent high-severity wildfires in a dry-conifer landscape are unprecedented over five centuries and foretell future forest loss
Across a large dry-conifer forest landscape, the area burned by high-severity fire in the past 30 y is unprecedented in five centuries. Historically, frequent...
Shifting gears to power human walking
Human muscles outnumber the minimum needed to actuate our joints, yet the advantage of this redundancy remains unclear. We show that redundancy provides a...
Paleomagnetic evidence for a nebular magnetic field from calcium-aluminum-rich inclusions
A key step in the formation of planetary systems is the collapse of a cloud of gas and dust into a protoplanetary disk. It...
The distribution and origin of Mercury’s crustal magnetization
Only Mercury and Earth have magnetic fields from a core dynamo and from crustal rocks that are magnetized in the present-day and/or past core...
A transient global warming event during Earth’s penultimate icehouse
Deep-time hyperthermal events are critical for parameterization of climate sensitivity and tipping-point thresholds and for understanding the impacts of modern climate warming on marine...
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