Correction for Giguère-Croteau et al., North America’s oldest boreal trees are more efficient water users due to increased [CO 2], but do not grow faster ...

In the west, the glaciers feeding Wordie Ice Shelf (1.3-cm SLE) lost 1 to 2 Gt/y in 1979–2003, increasing to 8 Gt/y in 2017, with speed-up detected over the entire drainage. The mass loss for Wilkins ...

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A cold system normally takes longer to warm up than a cool system. Yet recent theoretical studies have suggested that the reverse may sometimes be possible. Here, using a colloidal particle in a heat ...

Zhang et al. (1) report that the Tibetan Plateau experienced a continuous advancing start of green-up date (SOS) from 1982 to 2011 based on the merged Global Inventory Modeling and Mapping Studies ...

The endoplasmic reticulum (ER) is the site at which secreted proteins (such as the hormone insulin) and membrane-bound proteins are folded. ATP-dependent chaperones within the ER help proteins fold.

The PNAS editors would like to thank all the individuals who dedicated their considerable time and expertise to the journal by serving as reviewers and guest editors in 2023. Their generous ...

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The sustainable aviation challenge is attracting plenty of investment and brainpower—as well as government policies aiming to incentivize development. But the innovations coming out of these efforts ...

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