Plastic teabags release microscopic particles into tea

Many people are trying to reduce their plastic use, but some tea manufacturers are moving in the opposite direction: replacing traditional paper teabags with plastic ones. Now, researchers have discovered that a soothing cup of the brewed beverage may come with a dose of micro- and nano-sized plastics shed from the bags. Possible health effects of ingesting these particles are currently unknown, the researchers say.

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Engineered protein crystals make cells magnetic

If scientists could give living cells magnetic properties, they could perhaps manipulate cellular activities with external magnetic fields. But previous attempts to magnetize cells by producing iron-containing proteins inside them have resulted in only weak magnetic forces. Now, researchers have engineered genetically encoded protein crystals that can generate magnetic forces many times stronger than those already reported.

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Hook-on drugs: New delivery strategy for K-Ras disruption

Scientists have succeeded in designing a compound to hook onto the pocket of the enzyme FTase and GGTase I, thereby inhibiting K-Ras. Scientists have worked to concoct an effective drug to target K-Ras proteins which cause cancer when they mutate. It is difficult to infiltrate K-Ras due to a lack of interactive pockets, so a strategy was devised to attack the necessary enzyme in the lipid modification of K-Ras.

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Thinner shells for delivering gentler therapeutic bursts

Releasing drugs that are packaged into microcapsules requires a significant amount of force, and the resulting burst can cause damage to human tissues or cause blood clots. A new technique creates lopsided microcapsule 'shells' that can burst and release their cargo at much lower pressure, making them safer for use in the body.

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Porcupinefish inspires sturdy superhydrophobic material

Nature has evolved a dazzling array of materials that help organisms thrive in diverse habitats. Sometimes, scientists can exploit these designs to develop useful materials with similar or completely new functions. Now, researchers have made a durable and flexible super-water-repelling material inspired by spiky porcupinefish skin.

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