This image was provided by the CDC and the Partnership, Inc. Available at Wikimedia Commons.Studies of the spread of infectious diseases have shown that behavior plays a strong role in which individuals are more likely to be infected and which ones aren't. For example, sexually transmitted diseases (STDs) are more commonly diagnosed in people that have more sexual partners. But despite our understanding of how diseases are spread among people, we know very little about the spread of diseases
It's funny how much greenwashing can occur from good intentions and how it worsens with time. Take for instance, this attempt (a Kickstarter effort) to make plastic using recycled blue jean fibers as a reinforcing agent.The resulting material is named Denimite (catchy enough) and has that classic indigo blue color. The composite is made by mixing an epoxy in with the fibers and then heating and compressing the material in a mold until the epoxy has reacted. The low viscosity resins undoubtedly
Why Does Alka-Seltzer Fizz?
The fizzing you see when you drop an Alka-Seltzer tablet in water is the same sort of fizzing that you see from baking powder. This reaction is caused by an acid reacting with a base. Check out this BrainStuff episode to learn more.
via Brain Stuff Show.
¿Varía con el tiempo la masa del protón? No me refiero a lo que refleja Wikipedia en la que, por ejemplo, el valor que aparece en la versión española es de 1,672621637(83)×10−27 kg, en la francesa 1,672623×10-27, en la italiana […] Leer másThe post Un límite a la variación de masa de las partículas en 7500 millones de años appeared first on Experientia docet.