Science Alert
Catch up on the latest science news, from space and technology to life and environmental research- all the discoveries shaping our world today.
Updated: 1 hour 26 min ago
This day in space: NASA launched first successful communications satellite in 1960
On August 12, 1960, NASA launched Echo 1A, a 100-foot balloon that became its first successful communications satellite. The passive spacecraft reflected telephone, radio and television signals between distant points on Earth. It also helped NASA study atmospheric density, solar pressure and satellite triangulation before re-entering Earth’s atmosphere in 1968.
Scientists find a new way to stop malaria: Let mosquitoes live, kill parasites
Innovative researchers are engineering specialized bed nets that distribute antiparasitic compounds to combat mosquitoes. These compounds hinder the growth of malaria parasites within the insects, providing a vital alternative as traditional insecticides diminish in effectiveness against evolving resistant mosquito populations. By employing a combination of two compounds, the approach effectively targets various parasite sites, complicating the development of resistance and enhancing protection against malaria transmission.
In 1643, Torricelli used mercury to measure the hidden pressure of Earth's air
In the 17th century, Evangelista Torricelli revolutionized meteorology by inventing the mercury barometer, fundamentally altering our comprehension of atmospheric pressure. His groundbreaking device unleashed a cascade of experiments correlating pressure changes with variations in altitude. Additionally, through the use of vacuum pumps, he painstakingly delved deeper into the nuances of atmospheric forces. Torricelli's pioneering efforts serve as the bedrock of contemporary atmospheric science.
Abandoned quarries dug for rocks can slowly fill with plants, water and wildlife
Abandoned quarries are evolving into essential ecological and recreational areas. After mining activities have halted, these sites begin to regrow with nature, forming fresh habitats for various wildlife. With effective management strategies in place, these once-industrial pits can foster biodiversity and offer sustainable options for public use, transforming land value in innovative ways.
Over 100,000 cuttlefish gather in Australia yearly; fewer than 10 arrived in 2026, baffling scientists
Giant Australian cuttlefish at Point Lowly faced a drastic population plunge in 2026, with researchers noting less than ten cuttlefish spotted per dive, a historic low. The downturn is potentially tied to an algal bloom in South Australia, which may have adversely affected the cuttlefish or diminished their food availability. Conservation initiatives and a tourism moratorium have been established to facilitate a revival of the cuttlefish numbers.
California built beaver-like dams in coho creeks; survival rose from 8% to 60% after restoration
Innovative restoration initiatives that emulate beaver dams have drastically enhanced coho salmon survival rates, boosting juvenile survival in a specific creek from eight percent to sixty percent. By generating cooler, slower water environments, these structures are essential for nurturing young salmon. Furthermore, these revitalized areas bolster resistance to drought conditions within the Scott River watershed, underscoring the necessity of reinstating vital wetland habitats for at-risk salmon species.
In 1977, a Saudi prince towed an Alaskan iceberg to Iowa; now engineers are exploring the idea as freshwater scarcity worsens
In a bold venture back in 1977, a Saudi prince attempted to tow an iceberg to address a water supply dilemma. This audacious project confronted considerable engineering hurdles and substantial expenses. With current desalination methods proving both expensive and environmentally taxing, the growing issue of iceberg melting has rekindled interest. Engineers are now revisiting the practicality of transporting icebergs as a viable source of freshwater.
America poisoned prairie dogs for decades, but scientists found they sustain healthy grasslands
Prairie dogs were once viewed as pests but are now recognized as ecological assets. Their burrowing and grazing improve soil and water infiltration significantly. These small mammals help prevent grasslands from turning into shrublands. Areas with prairie dogs also provide more forage for livestock and store more carbon. The loss of prairie dogs diminishes crucial ecosystem services for both nature and people.
Meet Red Handfish, the endangered 'walking' fish that became Photo Ark's 18,000th species
For 20 years, photographer Joel Sartore has been documenting animals through his Photo Ark project, which has now reached its 18,000th species. The latest addition is the critically endangered red handfish, a tiny marine fish that uses its fins to move across the seafloor. Sartore hopes the project will raise awareness about threatened species and help preserve a record of animals that could disappear.
In 1868, an eclipse in India revealed an element found on Earth 27 years later
During the solar eclipse of 1868 in India, astronomers stumbled upon an enigmatic yellow spectral line, initially observed by Pierre Jules Janssen. Although its significance was not immediately recognized, Norman Lockyer soon named the unidentified element helium upon further analysis. Eventually, William Ramsay verified helium's presence on Earth in 1895 by extracting it from a mineral, solidifying Janssen's pioneering approach to studying solar prominences.
Discarded salon hair is being transformed into an oil-absorbing barrier that protects mangroves from oil spills in Rio de Janeiro
Discarded human hair is now preventing oil pollution in Rio de Janeiro's Guanabara Bay. Each gram of hair absorbs approximately five grams of oil, repelling water effectively. These hair barriers, made from salon waste, can remain in the water for four months. The initiative protects vulnerable mangrove ecosystems from chronic and everyday oil leaks. This innovative project aims to aid the recovery of the bay's marine life.
