Collaborate Disseminate
Remember when work meetings were just a bunch of people filling up a small, poorly ventilated room with their exhaled breath? Back in the good old days, all you had …read more Continue reading Compact Sensor Keeps You Safe by Watching CO2 Levels
Virtually any hobby has an endless series of rabbit holes to fall into, with new details to learn around every corner. This is true for beekeeping, microcontrollers, bicycles, and gardening …read more Continue reading 3D Printing Espresso Parts
When we see a CO2 laser cutter build around these parts, chances are pretty good that the focus will be on the mechatronics end, and that the actual laser will …read more Continue reading Scratch-Built CO2 Laser Tube Kicks Off a Laser Cutter Build
There’s been a constant over the last few weeks’ news, thanks to Elon Musk we’re in another Bitcoin hype cycle. The cryptocurrency soared after the billionaire endorsed it, at one point coming close to $60k, before falling back to its …read more
Continue reading What Uses More Power Than Argentina But Doesn’t Dance The Tango?
As the world settles into this pandemic, some things are still difficult to mentally reckon, such as the day of the week. We featured a printed day clock a few months ago that used a large pointer to provide this basic psyche-grounding information. In the years since then, [Jeff Thieleke] …read more
Continue reading Day Clock Monitors Air Quality of the Great Indoors
Soda Stream machines use a cylinder of compressed CO2 to carbonate beverages, and cylinders that are “empty” for the machine’s purposes in fact still have a small amount of gas left in them. User [Graldur] shared a clever design for using up those last gasps from a cylinder by turning …read more
Continue reading Used Soda Stream Cylinder Becomes DIY Canned Air
Most of us are aware that trees turn CO₂ into oxygen, but we’d venture to guess that many people’s knowledge of this gas ends there. Is it feast or famine out there for the trees? Who can say? We admire [rabbitcreek]’s commitment to citizen science because he’s so focused on …read more
Imagine that you’re starting a project where you need to measure temperature and humidity. That sounds easy in the abstract, but choosing a real device out of many involves digging into seemingly infinite details and trade-offs that come with them. If it’s a low-stakes monitoring project, picking the first sensor …read more
Continue reading Picking the Right Sensors for Home Automation
A team heated a cloud of gas up to 2,000°F and blasted it with radiation to see what happens on giant planets that orbit very close to their stars. Continue reading NASA Scientists Created a Super-Hot Exoplanet Atmosphere on Earth
Some 50 million Indigenous peoples died during the 16th century, a collapse that caused atmospheric carbon dioxide levels to drop. Continue reading European Genocide of Indigenous Peoples in the Americas Cooled Earth’s Climate