In a world where many regions struggle to secure enough water, MIT researchers have developed a new water harvester capable of extracting sufficient fresh water from the air to meet the daily needs of several people.

Water harvesters typically use adsorbent materials to collect water on their surfaces. This new device from MIT maximizes exposure to air with a series of vertical fins spaced 2 mm (0.08 in) apart. These fins are constructed from copper sheets sandwiched in copper foams and coated with a specialized zeolite material, renowned for its water adsorption properties. After an hour, the fins become saturated with water, at which point the copper sheets are heated to release the collected water. Repeating this cycle 24 times a day in air with 30% humidity (considered arid), the harvester can produce up to 1.3 L (0.3 gal) of drinkable water per day per liter of the adsorbent coating. When scaled up, this equates to 5.8 L (1.5 gal) per kilogram (2.2 lb) of material used per day, enough to meet the daily water needs of several people.

A groundbreaking Nano Transparent Screen (NTS) has been developed and commercialized for the first time in the world. This innovative screen can adjust its transparency according to the environment and can be produced at a low cost, paving the way for the widespread adoption of large transparent screens, which until now have been prohibitively expensive. The newly developed screen is expected to find applications across various products, such as transparent displays in department stores and supermarkets, smart windows for buildings, and versatile transparent displays suitable for both indoor and outdoor promotional uses.

The research team, led by Principal Researcher Jun-Ho Jeong of the Nano-lithography and Manufacturing Research Center at the Korea Institute of Machinery and Materials (KIMM), in collaboration with Meta2People, has successfully commercialized a 100-inch large-sized NTS. This screen’s transparency can be freely adjusted depending on the surrounding lighting and images. The NTS was installed in the outdoor space of the “Youth Mall” located in Chungju in June and will be showcased at the International Nano Technology Exhibition, known as “Nano Korea 2024,” from July 3 to July 5, 2024, at KINTEX in Ilsan.

Researchers at the Norwegian University of Science and Technology (NTNU) have developed an innovative technology that addresses two significant environmental challenges: utilizing industrial waste heat and generating clean water. This breakthrough was highlighted in a recent university press release.

Industrial heat is a major component of global energy consumption. After being used in industrial processes, a significant portion of this heat is typically wasted, released into oceans or the atmosphere. In Norway alone, it is estimated that 20 TWh of heat is wasted annually—equivalent to half the energy demand of Norwegian households or the energy used for heating homes. Kim Kristiansen, a doctoral researcher in NTNU’s Department of Chemistry, sought a more efficient way to repurpose this wasted energy.