Since 1988, the Intergovernmental Panel on Climate Change (IPCC) was formed and tasked with advancing knowledge of humanity’s impact on the natural environment. Beginning in 1990, they have issued multiple reports on the natural, political, and economic impacts Climate Change will have, as well as possible options for mitigation and adaptation. On Feb. 27th, the IPCC released the second part of its Sixth Assessment Report (AR6) – “Impacts, Adaptation, and Vulnerability” – and the outlook isn’t good!Continue reading “The IPCC Releases its 2022 Report on Climate Change, in Case you Needed Something Else to Worry About”
Researchers at Australia’s Curtin University have discovered evidence of a massive impact on the Martian surface after 4.45 billion years ago. This may not seem like a surprising revelation – after all, we know that there were several large impacts on Mars, like Hellas and Argyre, and we know that large impacts happened frequently in the early solar system – so why is this a big deal?Continue reading “A Mars Meteorite Shows Evidence of a Massive Impact Billions of Years ago”
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In 2014, the UN Intergovernmental Panel on Climate Change (IPCC) released its Fifth Assessment Report (AR5). As with previous reports, AR5 contained the latest findings of Climate Change experts from all relevant disciplines, as well as projections about the near future. In short, the AR5 and its predecessors were assessments of the impact anthropogenic Climate Change was having on the planet and how we could avoid worst-case scenarios.
On Aug. 9th, 2021, the IPCC released a report titled Climate Change 2021: the Physical Science Basis. Combining the latest advances in climate science and multiple lines of evidence, this first report paints a rather bleak picture of the remainder of the 21st century. At the same time, it presents a call to action and shows how mitigation strategies and reducing greenhouse gas emissions will ensure a better future for all.Continue reading “A new Assessment of the World’s Climate is out. The News Isn’t Good”
All hands have to be on deck if the world is going to tackle degradation, and one of the biggest emitters is also one of the least well known – international shipping. A 2018 study estimated that pollution emitted from cargo ships resulted in 400,000 annual premature deaths from lung cancer and heart disease. Many of those deaths resulted from the sulfur dioxide the ships were belching into the air. Since the beginning of the year, sulfur dioxide has been capped at .5% of emissions, compared to 3.5% previously. While the long term benefits of that emissions cap will take some time to appear, there’s another pollutant that could potentially be tackled in the near future: nitrogen dioxide.
Nitrogen dioxide (NO2) is one of the emissions from diesel engines, and has been strictly capped in the automotive market for a number of years. While the shipping industry so far has escaped regulation, there is a strong possibility that restrictions may be coming in the near future. Regulations in themselves are great, but they are useless if not enforced, and the open ocean is a notoriously difficult place to enforce them. That difficult task might have just gotten easier, as scientists at the European Space Agency realized they can use satellite data they are already collecting to track the nitrogen dioxide emissions of individual ships on the open ocean.Continue reading “Satellites can see the pollution trails from individual ships”
A new study found that warmer ocean temperatures driven by climate change have caused Australia’s Great Barrier Reef to lose more than half of its corals since 1995. The researchers say virtually all coral populations along the Great Barrier Reef have declined due to repeated “bleaching events” in the past 25 years. They said the devastation of the coral will continue unless action is taken to mitigate the causes of a warming climate.Continue reading “Great Barrier Reef Has Lost Half of its Coral Over the Last 25 Years”
Our growing understanding of extremophiles here on Earth has opened up new possibilities in astrobiology. Scientists are taking another look at resource-poor worlds that appeared like they could never support life. One team of researchers is studying a nutrient-poor region of Mexico to try to understand how organisms thrive in challenging environments.Continue reading “Nutrient-Poor and Energy-Starved. How Life Might Survive at the Extremes in the Solar System”
It is a foregone conclusion that if humanity intends to survive the so-called “Anthropocene” we need to make the transition away from fossil fuels and other methods that are unsustainable and amplify our impact on the planet. In this respect, a great deal of research and development is being directed towards “renewable energy.” Of the many methods that are being developed, the biggest contender is and always has been solar power.
Unfortunately, solar power suffers from a number of drawbacks, like the fact that it is only available during the day and favorable weather conditions. However, a new study by researchers from the Institute for Research in Electronics and Applied Physics (IREAP) shows how a special kind of photovoltaic cell could generate power at night. These “anti-solar” cells could revolutionize renewable energy and make it far more proficient.Continue reading “Anti-Solar Cells Could Generate Electricity at Night”
An ice shelf in Antarctica is about to give birth to a baby. This baby is a giant, spawned by growing cracks in the Brunt Ice Shelf. It’s not clear what this’ll mean to the scientific infrastructure in the area, and to the human presence, which were both established in the 1950s.Continue reading “Antarctica is About to Unleash an Iceberg Twice the Size of New York City”
Nothing lasts forever, especially an iceberg drifting away from its frigid home. This coffin-shaped iceberg was spotted by astronauts on the International Space Station as it drifted northwards. It split off from a much larger iceberg about 18 years ago, and is moving into warmer and warmer waters.
There’s nothing an astronomer – whether professional or amateur – loves more than a clear dark night sky away from the city lights. Outside the glare and glow and cloud cover that most of us experience every day, the night sky comes alive with a life of its own.
Thousands upon countless thousands of glittering jewels – each individual star a pinprick of light set against the velvet-smooth blackness of the deeper void. The arching band of the Milky Way, itself host to billions more stars so far away that we can only see their combined light from our vantage point. The familiar constellations, proudly showing their true character, drawing the eye and the mind to the ancient tales spun about them.
There are few places left in the world to see the sky as our ancestors did; to gaze in wonder at the celestial dome and feel the weight of billions of years of cosmic history hanging above us. Thankfully the International Dark Sky Association is working to preserve what’s left of the true night sky, and they’ve rightfully marked northern Chile to preserve for posterity.