Wireless charging performance is limited less by power delivery than by the physics of heat, and solving it requires rethinking the hardware. Plug a phone into a modern charger and the first 10 minutes are impressive. The next 20 are not. This is not a defect. It's the connected device protecting itself. As temperature rises during charging, a smartphone's battery management system reduces the current it will accept, because heat accelerates the chemical degradation that permanently reduces battery capacity.

Taken from high resolution satellite imagery. Can you tell us a bit about your background and your current area of research? I use computational tools to study animal behaviour. After my PhD, I joined the U.S. Army Research Office, where I used satellite imagery to follow animals across whole landscapes, which is a powerful technique for seeing broad patterns, but far too coarse to capture what individuals are actually doing. That gap is what drives my current work at Princeton: I combine drone video with AI methods to resolve movement at much finer scales, as I have done in studies of Olive Baboons and lions.

The signing of the Paris Agreement by 200 countries in 2015 was a rare moment of global unity, and the euphoria was real. To cheers and tears, the international climate treaty was approved by nearly every country in the world. Fundamental to the agreement was a commitment to keeping temperatures from rising beyond 1.5C (2.7F) above the pre-industrial levels of the mid 19th-century. But 11 years on, it is evident that the Earth is soon going to exceed that threshold because of the continued record burning of fossil fuels. A report from the United Nations Environment Programme (UNEP) in Nairobi, Kenya - called Limiting Overshoot - has found that even under the most optimistic scenario, the Earth will heat up by 1.8C (3.2F) above pre-industrial levels.

Follow this section to personalize your feed and get instant alerts. Follow Go to your personalized feed WHY FOLLOW? Smart Alerts: Get notified about major news as it happens. Follow this tag to personalize your feed and get instant alerts. Follow Go to your personalized feed WHY FOLLOW? Smart Alerts: Get notified about major news as it happens.

South Korea's power demand set to soar on AI boom South Korean Minister of Climate, Energy and Environment Kim Sung-whan checks data of the Han River Flood Control Office's flood forecasting system in Seoul on Sept. 2. | REUTERS SEOUL - South Korea's demand for power in the coming years is set to surge on plans by chipmakers Samsung Electronics and SK Hynix to expand production and the building of new artificial intelligence data centers, according to the country's energy minister. Those AI-driven power needs alone will lift South Korea's demand for power by 25 to 30 gigawatts, the Minister of Climate, Energy and Environment Kim Sung-whan said in an interview this month. On top of that, the country will also need to contend with increased power demand due to the shift to electric vehicles from gasoline-engine cars and to heating via electricity rather than gas, he added. In a time of both misinformation and too much information, quality journalism is more crucial than ever. By subscribing, you can help us get the story right.

An empty lot is stacked with aluminum brackets, steel rods and wooden planks in Ulanqab, China. Set in rolling grassland, Ulanqab is an unlikely technological hub. Yet this modest city of less than 2 million people in Inner Mongolia has found itself on the front line of China's efforts to relocate computing power away from its crowded eastern megacities and out to its western regions, where both space and inexpensive green energy are abundant. At one cluttered intersection on the eastern edge of the city on a Friday at lunchtime, workers streamed out of a cluster of data-center construction sites -- a reminder of the scale of the endeavor here, some 350 kilometers northwest of Beijing. Still wearing hard hats and high-visibility vests, their pants and boots caked in dust, they congregated at a cluster of trucks selling cheap meals, beer and cigarettes.

Follow this section to personalize your feed and get instant alerts. Follow Go to your personalized feed WHY FOLLOW? Smart Alerts: Get notified about major news as it happens. Follow this tag to personalize your feed and get instant alerts. Follow Go to your personalized feed WHY FOLLOW?

Here's how to know what your options are, extend your system's lifespan, and save on energy bills no matter what platform you prefer.

This material may not be published, broadcast, rewritten, or redistributed. Quotes displayed in real-time or delayed by at least 15 minutes. Market data provided by Factset . Powered and implemented by FactSet Digital Solutions . Mutual Fund and ETF data provided by LSEG .

Follow this section to personalize your feed and get instant alerts. Follow Go to your personalized feed WHY FOLLOW? Smart Alerts: Get notified about major news as it happens. Follow this tag to personalize your feed and get instant alerts. Follow Go to your personalized feed WHY FOLLOW?