life

Daily energy expenditure through the human life course By Herman Pontzer, Yosuke Yamada, Hiroyuki Sagayama, Philip N. Ainslie, Lene F. Andersen, Liam J. Anderson, Lenore Arab, Issaad Baddou, Kweku Bedu-Addo, Ellen E.…

The scientific exploration of Mars over the past several decades has resulted in increasing evidence that the martian surface hosted habitable environments early in its history, as well as evidence of the building blocks of life in the form…

SummaryToday, oxygen fuels much of life on Earth, but it wasn't always that way. Three billion years ago, this gas was scarce in the atmosphere and oceans. Knowing why oxygen became plentiful could illuminate the evolution of our planet's…

More VEGF, more life span and health spanAdvanced aging is celebrated but its ill effects of deterioration at the cell, tissue, and organ levels are not. Grunewald et al. provide evidence for the vascular theory of aging, which reports that…

Keeping warm when smallSeveral mammal species live in cold-water environments, enabled by adaptations such as blubber and large size. A notable exception to this rule is the sea otter, a species that is orders of magnitude smaller and…

The limits of channel offsetThe offset of stream channels across a strike-slip fault offer a record of long-term slip rates. The process itself is an interesting case of landscape evolution because the streams will spill straight across the…

SummaryAmid the global plastic pollution crisis, a growing number of governments and nongovernmental actors are proposing a new global treaty. In February 2021, at the fifth meeting of the United Nations Environment Assembly (UNEA)—the…