Loading...
ScienceDaily: Top Science News |
Saturn hasn't always had rings Posted: 17 Jan 2019 11:21 AM PST In its last days, the Cassini spacecraft looped between Saturn and its rings so that Earth-based radio telescopes could track the gravitational tug of each. Scientists have now used these measurements to determine the mass of the rings and estimate its age, which is young: 10-100 million years. This supports the hypothesis that the rings are rubble from a comet or Kuiper Belt object captured late in Saturn's history. |
How to rapidly image entire brains at nanoscale resolution Posted: 17 Jan 2019 11:21 AM PST A powerful new technique combines expansion microscopy with lattice light-sheet microscopy for nanoscale imaging of fly and mouse neuronal circuits and their molecular constituents that's roughly 1,000 times faster than other methods. |
Scientists find increase in asteroid impacts on ancient Earth by studying the Moon Posted: 17 Jan 2019 11:20 AM PST A team of scientists has determined the number of asteroid impacts on the Moon and Earth increased by two to three times starting around 290 million years ago. Previous theories held that there were fewer craters on both objects dating back to before that time because they had disappeared due to erosion. The new findings claim that there were simply fewer asteroid impacts during that earlier period. |
More animal species under threat of extinction, new method shows Posted: 17 Jan 2019 06:04 AM PST Currently approximately 600 species might be inaccurately assessed as non-threatened on the Red List of Threatened Species. More than a hundred others that couldn't be assessed before, also appear to be threatened. A new more efficient, systematic and comprehensive approach to assess the extinction risk of animals has shown this. |
Emperor penguins' first journey to sea Posted: 17 Jan 2019 06:04 AM PST New research reveals the previously unknown behaviors of juvenile Emperor penguins in their critical early months when they leave their birth colony and first learn how to swim, dive, and find food. |
Diet and food production must radically change to save planet Posted: 16 Jan 2019 03:52 PM PST Transformation of the global food system is urgently needed as more than 3 billion people are malnourished (including people who are undernourished and overnourished), and food production is exceeding planetary boundaries -- driving climate change, biodiversity loss, pollution due to over-application of nitrogen and phosphorus fertilizers, and unsustainable changes in water and land use. |
You are subscribed to email updates from All Top News -- ScienceDaily. To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States |
Loading...
Loading...