kittenTakeover
kittenTakeover t1_is2lny0 wrote
Reply to Sports like soccer, basketball better for young athletes’ bone health than running alone: Study supports recommendations that young athletes delay specialization in running, focus instead on ‘multidirectional’ sports by MyLifeisAsaJoker
This doesn't necessarily mean that it's better to direct children towards multidirectional sports OVER running. Running doesn't require specialized equipment, specialized facilities, or other people, which means that developing a running routine at a young age could possibly lead to a more active life in the long run.
kittenTakeover t1_irrf47p wrote
Reply to comment by EmperorGeek in How evolution get rid of unnecessary stuff? by CoolAppz
There is a selection bias against neutral traits. It's called opportunity cost since maintaining the trait typically requires forgoing other possible mutations, that could be beneficial. For this reason traits that lose their usefulness tend to disappear over time.
kittenTakeover t1_iqu7xal wrote
Reply to comment by knotacylon in How much does the size of an animal impact whether it is cold or warm Blooded? by Xerrostron
Body size is affected by a lot of factors. One of the biggest is if they have active aspiration and circulation or passive aspiration and circulation. The more passive the more they benefit from thin bodies with high surface area ratios to absorb oxygen.
kittenTakeover t1_ispcoa1 wrote
Reply to Ultrathin polymer-based ordered membranes that effectively remove salt from seawater and brine could provide a promising alternative to existing water desalination systems by giuliomagnifico
Can anyone clarify the economics of desalination for me? I consistently see stats that say that desalination costs around $3 per 1000 gallons or $0.003 per gallon. Similarly I see info saying that the US uses around 200 gallons per day per person. That equates to $219 per person a year. That seems cheap. What am I missing?