Some yacht builders are making waves in the industry by designing zero-emission, solar-powered alternatives that outperform their diesel-chugging counterparts, and some are so quiet that you can hear the marine life swim. Furthermore, when compared to the rumble of a diesel engine, which sends the smell of diesel fumes your way, getting to smell the ocean breeze without any disruptions is a huge plus.
The advancement of robotics and artificial intelligence (AI) has paved the way for a new era in warfare. Gone are the days of manned ships and traditional naval operations. Instead, the US Navy’s Task Force 59 is at the forefront of integrating AI and robotics into naval operations. With a fleet of autonomous robot ships, the Navy aims to revolutionize the way wars are fought at sea.
The Persian Gulf serves as a testing ground for Task Force 59’s fleet of robot ships. These unmanned vessels, ranging from solar-powered kayaks to surfboard-style boats, are equipped with state-of-the-art technology. Their purpose is to act as the eyes and ears of the Navy, collecting data through cameras, radar, and hydrophones. Pattern-matching algorithms help differentiate between oil tankers and potential threats like smugglers.
One particular vessel, the Triton, stands out with its ability to submerge for extended periods. This feature allows it to evade enemy detection and resurface when it is safe to do so. The Triton can stay submerged for up to five days, utilizing this time to recharge its batteries and transmit valuable information back to base.
A satellite demonstrator showed that energy collected from solar panels in space can be beamed to Earth using diffuse microwaves.
Zach Kirkhorn’s replacement, Delhi-trained accountant Vaibhav Taneja, has kept a low profile since joining Tesla in 2016—a very low profile.
Bioprocess engineer Jesús E. Rodríguez’s team dreams of replacing all synthetic plastics with biodegradable products.
Fuel cells are compact energy conversion units that utilize clean energy sources like hydrogen and convert them into electricity through a series of oxidation–reduction reactions. Specifically, proton exchange membrane fuel cells (PEMFCs), an integral part of electric vehicles, utilize proton-conductive membranes for operation. Unfortunately, these membranes suffer from a trade-off between high durability and high ion conductivity, affecting the lifetime and performance of PEMFCs.
To overcome this issue, scientists have synthesized chemically and physically modified perfluorosulfonic acid polymer membranes, such as Nafion HP, Nafion XL, and Gore-Select, which have proven to be much more durable than unmodified membranes conventionally employed in fuel-cell operations.
Unfortunately, none of the existing proton-conductive membranes have fulfilled the highly challenging technical target—passing an accelerated durability test or a combined chemical and mechanical test—set by the U.S. Department of Energy (DOE) to facilitate their use in automobile fuel cells by 2025.
The two materials, the researchers found, can be combined with water to make a supercapacitor — an alternative to batteries — that could provide storage of electrical energy. As an example, the MIT researchers who developed the system say that their supercapacitor could eventually be incorporated into the concrete foundation of a house, where it could store a full day’s worth of energy while adding little (or no) to the cost of the foundation and still providing the needed structural strength. The researchers also envision a concrete roadway that could provide contactless recharging for electric cars as they travel over that road.
The simple but innovative technology is described this week in the journal PNAS, in a paper by MIT professors Franz-Josef Ulm, Admir Masic, and Yang-Shao Horn, and four others at MIT and at the Wyss Institute for Biologically Inspired Engineering.
MIT engineers created a carbon-cement supercapacitor that can store large amounts of energy. Made of just cement, water, and carbon black, the device could form the basis for inexpensive systems that store intermittently renewable energy, such as solar or wind energy.
It reduces water wastage and carbon emissions.
“When it comes to photovoltaics, dust is the enemy. This is not a trivial concept, even if it may seem so at first glance; actually, the problem of soiling – the accumulation of dust, dirt or sand on PV panels – can decrease, sometimes significantly, the performance of solar power systems,” stated an Enel Green Power press release published on Friday.
Desert areas
“It’s an issue that’s particularly important in desert areas, areas with low rainfall, and those characterized by the presence of very dusty soil, where soiling can have a heavy impact on energy yield, but in any case, it’s something that concerns solar power everywhere, because regardless of location, cleaning the panels still involves costs, including environmental ones.”
The future of cities as seen by architects and urban planners. Future cities: Urban planners get creative | DW DocumentaryYOUTUBE.COMFuture cities: Urban planners get creative | DW Documentary.
Will the cities of the future be climate neutral? Might they also be able to actively filter carbon dioxide out of the air? Futurologist Vincente Guallarte thinks so. In fact, he says, our cities will soon be able to absorb CO2, just like trees do.
To accomplish this, Guallarte wants to bring sustainable industries and agriculture to our urban centers, with greenhouses atop every building. But in order for Guallarte’s proposal to work, he says, cities will have learn to submit to the laws and principles of nature.
