- Massive study shows that bacteria Aggregatibacter actinomycetemcomitans (Aa, cause of periodontitis) doesn’t cooperate well with other microbes in the mouth.
- Instead, it cooperates with bacteria found in dirt or in the colon, even though it’s part of the mouth microbiome.
- This shows that while microbes and bacteria evolve together, some may be dormant and unable to cooperate with their closest partners.
- Researchers manipulated almost all 2,100 Aa genes, while pairing Aa with 25 other microbes.
- The study continues, and could reveal whether smoking, poor hygiene, or diabetes can cause periodontitis by enabling Aa to attack gum tissue.
- For the first time ever, space cement has been successfully mixed on the International Space Station.
- On one hand, it seems stronger than Earthly cement because of its surprisingly uniform density, caused by lack of strong gravity.
- On the other hand, it may be weaker because it develops large air pockets, making it more porous than Earthly cement.
- The material will be tested further.
- This research paves the way towards finding out how to create concrete structures on the Moon and Mars.
- Artificial leaves made of Plexiglas successfully used to create drugs artimensinin (against malaria) and ascaridole (against parasitic worms).
- They rely on the process of photosynthesis, and have the potential to create various fuels and drugs.
- Moreover, the technology is scalable and can easily be used wherever there’s sun, meaning it could remove the cost of transporting medicine over long distances.
- In the future it could also support astronauts, but for now the team is waiting to perform first commercial trials.
- New model for periodic table of molecules shows promise in the field of materials design, possibly enabling scientists to create innovative functional materials.
- The table would be 4-dimensional, arranging molecules by four parameters: groups, periods, species, and families.
- It’s based on novel “symmetry-adapted orbital (SAO) models”, which align with known molecules and quantum-mechanical calculations.
- Now scientists will keep expanding these tables to predict new stable molecules that could be developed.
- Analysis of data from 48,188 people shows that vegetarians and meat-eaters are at risk of different types of stroke.
- Meat-eaters are at bigger risk of ischaemic stroke, which means a blockage of blood flow to the brain.
- Vegetarians are at bigger risk of haemorrhagic stroke, meaning rupture of blood vessels in the brain.