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Have a Happy Thought: Sometimes the only way to keep your sanity (or hearing!) in a noisy environment is to wear noise-cancelling headphones. Sometimes you just want to wear noise-cancelling headphones to hear your music/podcast/phone call/whatever more clearly. Either way, if you are out and about while wearing these, you may find that you are missing some important noises that you wish you had heard. This is increasingly a problem where bicyclists and pedestrians share spaces.  One car company (yes, you read that right) has come up with a solution: a two-toned bike bell that can cut through the noise-cancelling technology and let you hear the “ding” anyway. Without making the bell louder. You see, Noise Cancelling headphones work in a couple of different ways. First, the big foam earcups or well-fitting silicone or foam earpieces. These physically insulate your ear canal from sounds coming from the environment. Then, you can have Active Noise Cancelling – and th...

Have a Happy Thought: Humans are heading back to the moon (what else would I have written about today?!) I still tear up watching humanity's early steps into space.   What really caught me today was the juxtaposition of this transmission from Artemis II / Integrity commander and the NASA commentator's words just after.   Integrity: "We have a beautiful moonrise, we're headed right at it."   NASA commentator : "Commander Reid Wiseman confirms he has visuals of his destination."   Me: 🥹   This exchange takes place at around T+0:05:00 (5 minutes after liftoff / 7.5 hours into this coverage https://youtube.com/watch?v=m3kR2KK8TEs) Image: Artemis II Launch: Watch NASA Send Humans Back to the Moon (Live)   Thanks to NASA, the Canadian Space Agency, and all of the NASA partners in the USA and abroad for helping us all lift our eyes to the stars.

  Have a Happy Thought: Content warning: gratuitous use of what many consider a swear word.   We have all, on joining a new organisation or industry, had to learn a whole bunch of new words. Or potentially had to re-learn the meaning of a word in that new context. This is often called “jargon” – being words that have a very specific meaning in a specific context. There can however be words and phrases that more rightly can be termed “bullshit”. And this is in the technical, jargon-y use of the word “bullshit”, as defined by philosopher Harry Frankfurt in 1986 : basically, a complete disregard for whether the words being conveyed are true or false, so long as the bullshitter is convincing their listeners to go along with what the bullshitter wants. Turns out that this is not confined merely to politics (let’s be honest, your brain had already gone there), this is a problem rampant in business culture. So common, in fact, that a recent paper has developed a “ Cor...

Have a Happy Thought: Dams on rivers have many benefits to humans (power generation, managing downstream flow, ensuring year-round drinking and farming water, etc). Unfortunately, dams have equal (or often greater) dis-benefits to creatures that live in and around those rivers. One major issue is allowing fish that use the length of the river for feeding and spawning, to actually travel the length of the river! The city of Utrecht, Netherlands, has addressed this issue by having a “ fish doorbell ”. When fish pass in front of a camera, the lock keeper can let the fish through. But to make sure the lock keeper doesn’t miss any fish… there is a website where you (and about 1,000 others at any given time, it seems) can watch the live feed, and press the fish doorbell on the fish’s behalf! Image: The Utrecht canal lock keeper opens the lock. About — The Fish Doorbell   Many other rivers, canals, etc have had fish passages installed, such as this one on the Waikato River in Ne...

  Have a Happy Thought: Lightning can be spectacular to watch. It’s beautiful, and a little bit awesome (in the “terrifying” meaning of the word) to see the visible manifestation of electricity in the atmosphere. Especially in those dramatic cloud-to-ground discharges.   Lighting strikes the ground in Placitas, New Mexico, July 25 2009. Image: John Fowler   What I had never thought of before, is that there is a lot of cloud-to-ground transfer of electricity that doesn’t wait for a massive bolt of lightning. It can happen in lots of little transfers, say across the tops of trees. And that these small transfers might create corona: Coronae glow on the tips of spruce needles, induced by charged metal plates in a laboratory. These weak electric discharges subtly singe the tips of leaves and needles, and new observations indicate they may occur ubiquitously across treetops under thunderstorms. Credit: William Brune   Researchers recently used essentially a...

Have a Happy Thought: If I were to tell you a story about a woman with spiral side-buns on her head who crossed an insurmountable barrier in order to “take out a power station in order to allow the rebel forces to attack during night without being seen”… you’re probably thinking of this fictional character: Image: Carrie Fisher as Princess Leia from Star Wars Episode IV: A New Hope   Would you be surprised to learn that the quote above is actually about this, real, historical woman: Image: Coronela Clara de la Rocha in the book Las Soldaderas: Women of the Mexican Revolution, alongside her father, General Herculano de la Rocha. Images of Clara de la Rocha, along with images of Hopi women (Native Americans of the US Southwest) were all used as inspirations for the indefatigable, undefeatable, inspiring Princess Leia. Oh, and that daring night raid that Clara carried out? That was far from her only contribution to...

Have a Happy Thought: Humans on bicycles are the most energy efficient animal movement we have yet discovered. In the chart below, animals (as well as human-created vehicles) are plotted on a graph showing energy cost of transport, per weight. The bottom-right corner is the most efficient – moving the most weight for the least amount of effort.​ ​ DTAN Studio; Sources: “Energetic Cost of Locomotion in Animals,” by Vance A. Tucker, in  Comparative Biochemistry and Physiology , Vol. 34; June 15, 1970 ( most data ); chart by Dan Todd in “Bicycle Technology,” by S. S. Wilson, in  Scientific American , Vol. 228, No. 3; March 1973 ( data for human on a bicycle ); Tyson Hedrick/University of North Carolina at Chapel Hill ( velomobile calculation )   So for example a fruit fly and a bee are very light, but not very efficient because it turns out that flying is very “metabolically expensive”. Things that can swim, like salmon, can be really efficient due to body shape bu...

  Have a Happy Thought: Renewable energy is good for the planet, and our bank accounts… turns out it can also be visually stunning!   Image: Bill Liao Floating Solar panels in Walden Image: Dennis Schroeder Lenghu, Qinghai Province, with tourists at the Heidu Mountain Scenic Area and nearby wind turbines, June 2023. © Weimin Chu   Tala Desert, Qinghai Province: Solar power is used to transform the barren land into grassland. The herders raise “Photovoltaic sheep” to prevent the grass from growing too tall, June 2025. © Weimin Chu   This week for #ShareGoodNewsToo: We’ve now gone the longest time since a nuclear explosion since the first one in 1945. That is, it’s been eight years and five months without a nuclear explosion (the most recent one was a test in North Korea on September 3 rd , 2017).       More images from Weimin Chu as well as more of the story on Powering change: a visual journey into China’s green transitio...

  Have a Happy Thought: Capybara are a famously relaxed animal. You can easily find photos of capybara happily laying in the sun, or in water, or anywhere really, often alongside other animals that you wouldn’t think would be “chill”. So it should be of no surprise, but great delight to you, to hear that some zoos in Japan have created a competition called “Long Bath Showdown” to find out how long a capybara can sit and soak in a bath. And yes, there are photos.   Here’s Hechima from Saitama Children’s Zoo Park, with a timer showing when she decided to end her bathtime. Image: @capybarabath on X And the winner: Prune, from Nagasaki Bio Park, who took a leisurely soak of 1 hour 45 minutes. Image: @capybarabath on X   Capybara bath time is not restricted to this one competition – zoos all over the country let these beautiful creatures relax in heated water all winter long – and let visitors come and watch for a true moment of relaxation for everyone involved...

  Have a Happy Thought: Last week we all learned something about one time of “AI” – Large Language Models. This week may I introduce you to the other type of AI – one known by farmers around the world: Artificial Insemination.   Side note: A few years ago I was hitch-hiking between some small towns on the South Island and was given rides by two separate women… who happened to be the two AI specialists for that region of the country. Apparently AI folk are good people! And because I am such a city girl, those car rides are how I learned about farming AI at the age of 42.   Artificial Insemination in animals can be done for many reasons – the farmers on the South Island often use it for their cows to help prevent injuries to the cows when the bulls are… over-enthusiastic. Meanwhile, biologists are using AI to help an adorable endangered species – the kākāpō. Image: kākāpō ( Strigops habroptila ) © Oscar Thomas , (CC BY-NC-ND)   You see, for the last f...