Staring at Seagulls Makes Them Less Likely to Snatch Your Food – A team of researchers from the University of Exeter, UK, put a bag of chips on the ground and tested how long it took herring gulls (Larus argentatus) to approach when a human was watching them, compared to when the human looked away: on average, gulls took 21 seconds longer to approach the food with a human staring at them.

Source: Madeleine Goumas, Isabella Burns, Laura A. Kelley, Neeltje J. Boogert. Herring gulls respond to human gaze direction. Biology Letters, 2019.

2nd Interstellar Comet Looks Pretty Normal, Astronomers Say – Observations of the interstellar Comet Borisov have been flooding in for six weeks, and the more astronomers duplicate one another's work, the more confident they are in their analysis of the object.

Source: Piotr Guzik, et al. Initial characterization of interstellar comet 2I/Borisov. Nature Astronomy, 2019.

Humans could have salamander-like ability to regrow cartilage – Study opens door to new treatments for joint injuries and diseases.

Source: Ming-Feng Hsueh, Patrik Önnerfjord, Michael P. Bolognesi, Mark E. Easley, Virginia B. Kraus. Analysis of “old” proteins unmasks dynamic gradient of cartilage turnover in human limbs. Science Advances, 2019.

Depression Treatment: Does Healthy Eating Really Help? – A new study suggests that eating fruits and vegetables regularly could help young adults reduce the symptoms of depression.

Source: Heather M. Francis, et al. A brief diet intervention can reduce symptoms of depression in young adults – A randomised controlled trial. PLOS ONE, 2019.

Dinosaur predator with shark-like teeth found in Thailand – Long before T. rex entered the picture, this agile predator dominated Southeast Asia's floodplains.

Source: Duangsuda Chokchaloemwong, et al. A new carcharodontosaurian theropod (Dinosauria: Saurischia) from the Lower Cretaceous of Thailand. PLOS ONE, 2019.

Andromeda Galaxy Swallowed Many Dwarf Galaxies During Its Lifetime – An analysis of data from the Pan-Andromeda Archaeological Survey (PAndAS) has uncovered two major episodes of accretion, probably separated by billions of years, in which the Andromeda galaxy, a neighbor to our Milky Way Galaxy, gobbled up several small galaxies.

Source: Dougal Mackey, et al. Two major accretion epochs in M31 from two distinct populations of globular clusters. Nature, 2019.

Alcohol Is Fertility Statistical Magic - But Not In The Way You Think – A new review of other papers claims that unless women stopped drinking alcohol a year prior to conception they probably gave their kids future congenital heart disease.The authors are not kidding.

Source: Senmao Zhang, et al. Parental alcohol consumption and the risk of congenital heart diseases in offspring: An updated systematic review and meta-analysis. European Journal of Preventive Cardiology, 2019.

Salt-Rich Deposits Point to Ancient Briny Ponds in Mars’ Gale Crater – According to a new paper in the journal Nature Geoscience, rocks enriched in mineral salts within the 3.7-billion-year-old Gale Crater on Mars represent evidence of shallow briny ponds that went through episodes of overflow and drying.

Source: N. H. Thomas, et al. Mars Science Laboratory Observations of Chloride Salts in Gale Crater, Mars. Geophysical Research Letters, 2019.

Nuclear War Between India and Pakistan Could Devastate the Entire Planet – New simulations show that a nuclear war between two countries would plunge the entire globe into a nuclear winter that could last more than a decade.

Source: Owen B. Toon, et al. Rapidly expanding nuclear arsenals in Pakistan and India portend regional and global catastrophe. Science Advances, 2019.

Lunar Water Ice May Have Multiple Sources, Researchers Say – Lunar orbiters such as India’s Chandrayaan-1 spacecraft and NASA’s Lunar Reconnaissance Orbiter (LRO) recently detected water icy on the floor of some of the south polar craters, but no one is sure exactly when or how that ice got there.

Source: Ariel N. Deutsch, James W. Head, Gregory A. Neumann. Analyzing the ages of south polar craters on the Moon: Implications for the sources and evolution of surface water ice.. Icarus, 2019.