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Thursday, April 17th, 2025
| Time | Event |
| 1:50a | Harvard's RoboBee Masters Landing, Paving Way For Agricultural Pollination After more than a decade of development, Harvard's insect-sized flying robot, RoboBee, has successfully learned to land using dragonfly-inspired legs and improved flight controls. The researchers see RoboBee as a potential substitute for endangered bees, assisting in the pollination of plants. From a report: RoboBee is a micro flying robot that Harvard has been developing since 2013. As the name suggests, it is the size of a bee, capable of flying like a bee and hovering in mid-air. Its wings are 3 cm long and it weighs only 0.08 g. The weight was reduced by using light piezoelectric elements instead of motors. Piezoelectric elements change shape when an electric current flows through them. The researchers were able to make RoboBee flap its wings 120 times per second by turning the current on and off, which is similar to actual insects. While RoboBee exhibited flight capabilities comparable to those of a bee, the real problem was landing. Being too light and having short wings, it could not withstand the air turbulence generated during landing. It is easy to understand if you think about the strong winds generated when a helicopter approaches the ground. Christian Chan, a graduate student at Harvard who participated in the research, said, "Until now, it was a matter of shutting off the robot while it attempted to land and praying for a proper touchdown." To ensure RoboBee's safe landing, it was important to dissipate energy just before touchdown. Hyun Nak-Seung, a professor at Purdue University who participated in the development of RoboBee, explained, "For any flying object, the success of landing depends on minimizing speed just before impact and rapidly dissipating energy afterward. Even for tiny flapping like RoboBee's, the ground effect cannot be ignored, and after landing, the risk of bouncing or rolling makes the situation more complex." The findings have been published in the journal Science Robotics. 
Read more of this story at Slashdot. |
| 10:20p | US Halts $5 Billion New York Offshore Wind Project Mid-Build An anonymous reader quotes a report from Electrek: In its most aggressive attack against offshore wind yet, the Trump administration halted the $5 billion Empire Wind 1, already under construction off New York's coast. Norwegian developer Equinor announced yesterday that it received notice from the Bureau of Ocean Energy Management (BOEM) ordering Empire Wind 1 to halt all activities on the outer continental shelf until BOEM has completed its review. Interior Secretary Doug Burgum posted this tweet yesterday: ".@Interior, in consultation with @HowardLutnick, is directing @BOEM to immediately halt all construction activities on the Empire Wind Project until further review of information that suggests the Biden administration rushed through its approval without sufficient analysis." Burgum gave no indication of what insufficiencies there were in the approval process for the fully permitted offshore wind project, despite Trump's recent declaration of a national energy emergency that speeds up permitting processes. The commercial lease for the 810-megawatt (MW) Empire Wind 1's federal offshore wind area was signed in March 2017 during the first Trump administration. It was approved by the Biden administration in November 2023 and began construction in 2024. The project is being developed under contract with the New York State Energy Research and Development Authority (NYSERDA). Empire Wind 1, which was due to come online in 2027, has the potential to power 500,000 New York homes. Equinor says it's considering appealing the order. New York Governor Kathy Hochul issued a statement: "Every single day, I'm working to make energy more affordable, reliable and abundant in New York and the federal government should be supporting those efforts rather than undermining them. Empire Wind 1 is already employing hundreds of New Yorkers, including 1,000 good-paying union jobs as part of a growing sector that has already spurred significant economic development and private investment throughout the state and beyond. As Governor, I will not allow this federal overreach to stand. I will fight this every step of the way to protect union jobs, affordable energy and New York's economic future."
Read more of this story at Slashdot. |
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