Учёные из Японии создали пластик, который полностью разлагается в морской воде
Материал создан из полимеров с уникальной структурой, благодаря которой он легко разрушается в солёной воде, превращаясь в питательные вещества. Пластик безопасен — он не горит и не выделяет токсичных веществ.
Учёные отмечают, что такой пластик прочнее обычного, недорог в производстве, а технология его создания проста.
Учёные из Японии создали пластик, который полностью разлагается в морской воде
Материал создан из полимеров с уникальной структурой, благодаря которой он легко разрушается в солёной воде, превращаясь в питательные вещества. Пластик безопасен — он не горит и не выделяет токсичных веществ.
Учёные отмечают, что такой пластик прочнее обычного, недорог в производстве, а технология его создания проста.
Individual messages can be fully encrypted. But the user has to turn on that function. It's not automatic, as it is on Signal and WhatsApp. Right now the digital security needs of Russians and Ukrainians are very different, and they lead to very different caveats about how to mitigate the risks associated with using Telegram. For Ukrainians in Ukraine, whose physical safety is at risk because they are in a war zone, digital security is probably not their highest priority. They may value access to news and communication with their loved ones over making sure that all of their communications are encrypted in such a manner that they are indecipherable to Telegram, its employees, or governments with court orders. Telegram has gained a reputation as the “secure” communications app in the post-Soviet states, but whenever you make choices about your digital security, it’s important to start by asking yourself, “What exactly am I securing? And who am I securing it from?” These questions should inform your decisions about whether you are using the right tool or platform for your digital security needs. Telegram is certainly not the most secure messaging app on the market right now. Its security model requires users to place a great deal of trust in Telegram’s ability to protect user data. For some users, this may be good enough for now. For others, it may be wiser to move to a different platform for certain kinds of high-risk communications. What distinguishes the app from competitors is its use of what's known as channels: Public or private feeds of photos and videos that can be set up by one person or an organization. The channels have become popular with on-the-ground journalists, aid workers and Ukrainian President Volodymyr Zelenskyy, who broadcasts on a Telegram channel. The channels can be followed by an unlimited number of people. Unlike Facebook, Twitter and other popular social networks, there is no advertising on Telegram and the flow of information is not driven by an algorithm. However, the perpetrators of such frauds are now adopting new methods and technologies to defraud the investors.
from ms
