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A system designed at MIT could allow sensors to operate in remote settings, without batteries.

MIT researchers have developed a battery-free, self-powered sensor that can harvest energy from its environment.

Because it requires no battery that must be recharged or replaced, and because it requires no special wiring, such a sensor could be embedded in a hard-to-reach place, like inside the inner workings of a ship’s engine. There, it could automatically gather data on the machine’s power consumption and operations for long periods of time.

Tesla continues to make progress on its upcoming diner, drive-in theater and Supercharger in Los Angeles, with recent drone footage showing new water runoff infrastructure, preparations for stucco installation on the first-floor walls, and seemingly, materials for the start of some interior construction.

In a drone video update shared by YouTube channel 247Tesla on Sunday, you can see new stacks of sheetrock both inside and outside of entrances to the Tesla diner building, as construction prepares to begin focus on interiors. The video also shows a new rectangular area dug roughly five feet deep into the ground, which the video’s host says will likely be used to control water runoff.

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Matter energy and information.

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Research led by Macquarie University sheds new light on how concentrations of metals used in renewable energy technologies can be transported from deep within the Earth’s interior mantle by low temperature, carbon-rich melts.

A new gravimeter is compact and stable and can detect the daily solar and lunar gravitational oscillations that are responsible for the tides.

Gravity measurements can help with searches for oil and gas or with predictions of impending volcanic activity. Unfortunately, today’s gravimeters are bulky, lack stability, or require extreme cooling. Now researchers have demonstrated a design for a small, highly sensitive gravimeter that operates stably at room temperature [1]. The device uses a small, levitated magnet whose equilibrium height is a sensitive probe of the local gravitational field. The researchers expect the design to be useful in field studies, such as the mapping of the distribution of underground materials.

Several obstacles have impeded the development of compact gravimeters, says Pu Huang of Nanjing University in China. Room-temperature devices generally use small mechanical oscillators, which offer excellent accuracy. However, they are made from materials that exhibit aging effects, so these gravimeters can lose accuracy over time. Much higher stability can be achieved with superconducting devices, but these require cryogenic conditions and so consume lots of power and are hard to use outdoors.

A University of Alberta researcher may have just invented a feature that will make homes more affordable and energy-efficient.

New research could spell the end of awkward, heavy cables.

Using LFP batteries, Yotta Energy has eliminated the need to install a separate battery pack and the extra wiring that it needs.

Advances in oil and gas drilling have cut costs for a form of clean power that could help replace fossil fuels, according to the Department of Energy.

Now the agency is going all in on geothermal energy, which uses heat from deep within the Earth to produce largely pollution-free electricity.