Excitingly, scientists say that alternative universes are allowed by physics. We find out about the leading multiverse theories, and establish whether they could harbour an alternate version of you.
Species tend to live in narrower slices of mountainside on tropical versus temperate mountains. Stronger competition in the tropics explains this pattern for birds. For example, the habitable range of this white-tipped sicklebill (Eutoxeres aquila) is limited as a result of competition with its close relative, the buff-tailed sicklebill (Eutoxeres condamini). See page 416.
Fast-spreading subvariants are coming and going. But an entirely new variant could still emerge
Satellites capture fall in light-blocking pollution
Finding sequences that code for short proteins could add thousands of genes
Blobs of human brain cells cultivated in the lab, known as brain organoids or “mini-brains”, are transforming our understanding of neural development and disease. Now, researchers are working to make them more like the real thing
The cover shows an artistic impression of marine life in Indonesia’s coral reefs. The question of whether there are limits to biodiversity in the seas is typically addressed by examining the fossil record. In this week’s issue, Pedro Cermeño and his colleagues present a model that combines the fossil record with plate tectonics and Earth’s environmental conditions to offer insight into regional diversification of marine invertebrates. The researchers used the model to examine how biodiversity recovered after mass extinctions during the Phanerozoic eon, covering
some 500 million years of Earth’s history. They found that throughout the Phanerozoic, less than 2% of area of the globe covered by water showed signs of diversity levels reaching saturation. The team also note that as Pangaea broke up into continents, the stability of Earth’s environmental conditions allowed the development of diversity hotspots that helped to drive an increase in biodiversity in the late Mesozoic and Cenozoic eras.
Bizarre sea creatures, a new view of the ocean, the race to the moon, and more
We humans may think of ourselves, or possibly beetles, as typical Earthlings, but to a first approximation, life on Earth exists in the sea. And what spectacular life! Our special package on the oceans is teeming with images of eerie, delicate, elaborate, glowing and occasionally kind of frightening creatures that have rarely been seen by terrestrial species. The in-depth report was guided by sustainability senior editor Mark Fischetti along three main themes: mystery, discovery and surprise.
COVER: Voltage pulses from the tip of a scanning probe microscope induce single-molecule chemical reactions with selectivity and reversibility. Different constitutional isomers (distinguished here in shades of red, orange, and yellow) are selected by the polarity and magnitude of the voltage pulse. The findings advance the understanding of tip-induced chemistry and reduction-oxidation reactions in general. See pages 261 and 298.
Check out what’s new this week in Science: https://fcld.ly/uc4b5kh
Nature Magazine – July 14, 2022 Issue
Although the domestic dog can trace its origins to the grey wolf (Canis lupus), exactly when, where and how domestication happened has remained a source of debate. In this week’s issue, Anders Bergström, Pontus Skoglund and their colleagues, take a step towards resolving this question. The researchers analysed the genomes of 72 ancient wolves from across Europe, Siberia and North America, and spanning the past 100,000 years. They found that dogs are most closely related to ancient wolves from eastern Eurasia but that dogs in the Near East and Africa derive
up to half their ancestry from a distinct population related to modern southwest Eurasian wolves. Although none of the genomes analysed was a direct match for either dog ancestry, the researchers say that it has narrowed down where next to look for the ancestors of domestic dogs.
President Biden revealed the NASA telescope’s image of ancient galaxies whose light has been traveling 13 billion years to reach us.
CHILE’S VILLARRICA NATIONAL PARK—As a motley medley of mycologists climbed the basalt slopes of the Lanín volcano earlier this year, the green foliage at lower elevations gave way to autumnal golds and reds. Chile’s famed Araucaria—commonly called monkey puzzle trees—soon appeared, their spiny branches curving jauntily upward like so many cats’ tails.
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For some, the ruling limits professional mobility and conference attendance
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To spread, pathogens drive mice, people to make odorant
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In lab studies, SARS-CoV-2 finds ways to evade key drug. Some of the viral mutations are already found in people
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More than nutrient levels may drive toxic lake growths
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