KAUST

Soil moisture sensors can help farmers save water, by letting them know when their crops actually need to be watered. A new sensor could be particularly helpful, as it incorporates a special material which makes it highly sensitive to moisture.

It's always a shame when you buy fresh produce, only to have it spoil in the fridge before you can use it. The Aurora system is designed to keep that from happening, using a combination of ultraviolet light and vacuum packing.

We've already seen systems that wirelessly transmit data via patterns of flickering light. A Saudi Arabian team has created a less energy-intensive alternative, that could use modulated sunlight in place of traditional Wi-Fi.

Farmers will often place sheets of plastic on the ground along their crop rows, in order to help hold moisture in the soil. According to a new study, however, the use of wax-coated sand may be a cheaper and greener way to go.

In remote desert locations, at least two things are likely to be lacking: an electrical grid, and a source of water for agriculture. An experimental new system addresses both problems, by combining photovoltaic panels with an absorbent hydrogel.

Researchers have built an artificial retina out of perovskite materials that can detect light in a similar fashion to the human eye. In tests, the device was even able to recognize handwritten numbers with a high degree of accuracy.

It's a sad fact that people with severe respiratory illnesses are often confined to hospitals, where they must breathe through ventilators. A new portable device that harvests oxygen from the air, however, may someday allow them to stay at home.

The burning of coal may be falling out of favor as a means of generating heat and electricity, but that doesn't mean the material no longer has any valuable uses. According to a new study, it could be utilized in the desalination of seawater.

Living coral reefs consist of rigid "skeletons" inhabited by the tiny coral polyps that built them. A new research project aims to restore damaged reefs faster than ever, utilizing 3D-printed skeletons made of the same material as the real thing.

There are many parts of the world that lack infrastructure, but that get a lot of sunlight ... which makes buildings hot. A new system could help, as it uses a combination of sunlight and salt water – but no electricity – to produce a cooling effect.

The ocean holds billions of tons of lithium, and scientists have just tested a new way of extracting it, with a device that takes in seawater and pumps out freshwater and lithium phosphate – plus more than enough H2 and chlorine to pay the power bill.

While reverse osmosis is a relatively energy-efficient form of seawater desalination, it is nonetheless made less efficient by a problem known as biofouling. A new membrane coating, however, could address biofouling like never before.