The first detection of gravitational waves was in November 2015, a century after Albert Einstein’s General Theory of Relativity predicted their existence. It was a discovery of such importance that the Nobel prize for physics was awarded for it soon after in 2017. But since then there have been a flurry of such waves that are caused by the collisions of massive stellar objects.
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Whale evolution has always fascinated me, ever since I learned that their evolutionary path took them from sea to land and then back to the sea. Here’s an animation showing how the land-to-sea-again transition may have occurred.
Earth scientist Katharine Hayhoe, director of the Climate Science Center at Texas Tech University, reveals how she was recently invited to appear on CNN’s Anderson Cooper show to talk about climate change and then her taped segment was omitted altogether to give more time to stupid former senator Rick Santorum to bloviate once again about how it is all a hoax manufactured by greedy scientists. She said that this is not the first time this kind of thing has happened to her. It shows how these so-called news shows, even those that claim to be pro-science, would rather have an ignorant famous person than a knowledgeable expert.
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I like to keep the above quote by H. L. Mencken always in mind because it is a useful caution whenever one is weighing in on weighty issues on which one is not an expert. Like pretty much everyone else, I sometimes have a brainwave about some deep or complex problem (usually in a field that I am not that familiar with) in which a simple solution suddenly stares me in the face. I then wonder why no one else has thought of this ‘brilliant’ solution before and the usual answer is that people who do know a lot more about this topic are well aware of this proposed ‘solution’ and also know why it will not work.
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Trevor Noah asks the right question but the answer is obvious. These shows are not interested in informing the public but in pleasing their sponsors and getting ratings and they know that stupid people who reinforce ignorant views draw audiences, Donald Trump being the prime example. It is just a human version of David Letterman’s ‘stupid pet tricks’ segment on his former show.
The idea of immortality has had great appeal since time immemorial but was thought of in terms of creating some elixir with the property of bestowing it. But more recently some people have started to think that technology may be able to actually achieve it. This article looks at the ethical implications of two of the proposed methods: rejuvenation and mind uploading.
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A new report issued by the administration of Donald Trump has come out that issues a stark warning of the major costs that the US will incur if climate change is allowed to continue unchecked. The report is pretty stark. You can read the full report of the Fourth National Climate Assessment here and below is a key excerpt from its summary findings.
Communities, governments, and businesses are working to reduce risks from and costs associated with climate change by taking action to lower greenhouse gas emissions and implement adaptation strategies. While mitigation and adaptation efforts have expanded substantially in the last four years, they do not yet approach the scale considered necessary to avoid substantial damages to the economy, environment, and human health over the coming decades.
…In the absence of significant global mitigation action and regional adaptation efforts, rising temperatures, sea level rise, and changes in extreme events are expected to increasingly disrupt and damage critical infrastructure and property, labor productivity, and the vitality of our communities. Regional economies and industries that depend on natural resources and favorable climate conditions, such as agriculture, tourism, and fisheries, are vulnerable to the growing impacts of climate change. Rising temperatures are projected to reduce the efficiency of power generation while increasing energy demands, resulting in higher electricity costs. The impacts of climate change beyond our borders are expected to increasingly affect our trade and economy, including import and export prices and U.S. businesses with overseas operations and supply chains. Some aspects of our economy may see slight near-term improvements in a modestly warmer world. However, the continued warming that is projected to occur without substantial and sustained reductions in global greenhouse gas emissions is expected to cause substantial net damage to the U.S. economy throughout this century, especially in the absence of increased adaptation efforts. With continued growth in emissions at historic rates, annual losses in some economic sectors are projected to reach hundreds of billions of dollars by the end of the century—more than the current gross domestic product (GDP) of many U.S. states.
I hate not knowing where I am and where I am going. While I am not averse to using GPS navigation to find my way around, I admit to not liking being entirely dependent on it. Just following step-by-step instructions from a disembodied voice leave me feeling uneasy because I like to know the big picture. Hence I also take with me old-fashioned road maps and before any trip, look up the general route that I will be taking and commit it to memory.
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You would think that one flat earth model was one too many. But last week there was a Flat Earth Conference in Denver that Kelli Weill attended. She says this conference gave wider publicity to the fact that the group behind the conference is at odds with the Flat Earth Society and that they have different models.
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