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195 articles
Fast radio bursts are millisecond-duration, extremely bright flashes of radio light that reach us from other galaxies. We do not know what they are but...
Dark matter, the “glue” that holds our Universe bound, remains a mystery. A key question to understand its nature is whether dark matter particles can interact...
The reason why the Vikings left Greenland in the early 15th century remains unclear. The declining temperature during the Little Ice Age had been thought to be...
Lessons from past warm periods in the Earth's history reveal that climate and atmospheric changes could lead to more intense seasonal rainfall, disturbing...
Analyzing seismic waveforms recorded by the InSight mission seismometer, we discovered and documented 47 marsquakes in the Cerberus Fossae region of Mars....
The gravity of massive objects can magnify background objects, making them appear larger and brighter. Precise alignment between a background star and a...
Better representation of Northern Hemisphere vegetation may resolve a scientific debate over how global temperatures changed during the past 12,000 years. Our...
Over the next 30 years, the expansion of cities will threaten global biodiversity unless we change the way that they are built. Greener cities can become part...
Disasters such as hurricanes, floods, and wildfires are increasing in frequency, and many locations are experiencing repeated disasters. Each disaster can...
We have discovered a new kind of repeating radio source using a sensitive low-frequency radio telescope in outback Western Australia. Its unusual properties...
The characteristics of an astronomical site limits the performance of telescopes. “Seeing”, the blurring of stellar images by atmospheric turbulence, is a key...
Volcanic hotspots like Hawaii are usually thought to be fed by hot blobs inside the Earth. A new class of cold hotspots is identified by inferring the...
The discovery of planets outside the Solar System began thirty years ago and has been on the rise since, but how much do we know about these planets? Can we...
Galaxies’ gas is the fuel to form new stars. The formation process stops when galaxies run out of this fuel. However, the mechanisms that cause a galaxy to run...
Fossil plants found in the Peruvian Andes revealed a dramatic tale of past environmental change. This transformation was a response of the rapid mountain...
Mars is nowadays a frozen desert devoid of liquid water, but it was not always like this: giant valleys and canyons on its surface show that at some point in...
Growing economic use of the oceans may help determine the achievement of global conservation goals. In looking to see where this capacity rests, we find that...
Several periods in the Earth's history were warmer than today and provide insight into future impacts of global warming. Climate and atmospheric changes can...
While invisible to the bare eye, microscopic algae are the base of marine food webs, eventually feeding large animals, such as fish and whales. These algae...
Reports that wildlife declined by more than 50% in recent decades grabbed headlines, but calculating an average global decline is trickier than it might seem....
It is commonly accepted that the burst in diversity of flowering plants, between 125 and 80 million years ago, had a negative impact on the diversity of other...
Using modern radio-telescopes, we found that the Milky Way expels large amounts of dense, cold gas from its central regions through a powerful galactic wind....
Freshwater ecosystems are the most threatened in the world yet hardly considered in conservation planning. We show that current conservation efforts focused on...
Ecosystems change over time. We devised a way to separate rapid and profound ecological changes from the slow, gradual turnover of species. We used fossil...
