- Narcissistic behaviours like self-congratulation on social media (ie flexing, for the cool kids) have always perplexed researchers, and this study sheds new light.
- Being a narcissist seems to be a defense mechanism for coping with insecurities, a way to cover up your low self-worth - unfortunately it makes others like us less.
- The study is limited though, because it was just a test on a computer taken by 300 participants.
- They dissolve in water in 24 hours, and could be used to pack fruit, vegetables, poultry, meat, and seafood.
- Researchers created 3 types of food films based on sodium alginate, a natural biopolymer from seaweeds.
- Sodium alginate is mixed with a natural acid that makes the films strong, and has antioxidant components that can prolong food’s shelf life.
- It’s possible to enrich the films with natural antiviral substances like garlic, turmeric or ginger in order to extend food’s life even more.
- Making these films requires no special equipment, it could be made in food or film factories.
- New copper-based, reusable metal foam has near 100% air filtration efficiency for particles sized the size of COVID-19.
- The foam starts with ultra-thin copper nanowires, and metal is deposited on them through electric currents.
- Current filtration materials, such as those used in N95 masks, are easy to destroy, and not easily reusable.
- Whereas the copper foam is a sustainable, reusable alternative that can be produced at scale for a very low cost, approximately $2 per filter.
- Tensegrity is a century old design principle combining a flexible mesh with isolated rigid bars in order to delocalize deformations.
- Thanks to this, the material can’t get destroyed in a chain reaction of locally confined damage (like when ceramics break from an initial small crack).
- This is the first ever physical demonstration of tensegrity metamaterials.
- It shows a 25 times improvement in deformability, and orders-of-magnitude improvement in energy absorption compared to state-of-the-art materials.
- The material could have a wide array of potential engineering applications.
- An analysis of 28,000 gut microbiome samples from all around the world has yielded a database of 140,000 virus species - the Gut Phage Database.
- Scientists used metagenomics, a DNA-sequencing method, to isolate the different viruses from their samples.
- The resulting database will be an incredible resource for scientists studying bacteriophages, and how they influence our guts and overall health.