Conéctese Regístrate


23/07/2014

Tendencias 21

25 Aniversario




CIENCIA ON LINE

Un tugurio dentro de otro se desarrolla en Kenia - 23/07/2014 / Leido 164 veces/ Comentarios 0

En el límite este del asentamiento informal de Kibera, en la capital de Kenia, un grupo de niños y niñas se reúne portando grandes bidones amarillos para recoger agua de un grifo en mal estado. Las altas torres grises y beiges de Soweto Oriental se elevan sobre ellos. Una muchacha coloca el...

México último y EEUU entre los peores en eficiencia energética - 22/07/2014 / Leido 317 veces/ Comentarios 0

México ocupa el último lugar en una nueva clasificación sobre la eficiencia energética de 16 de las mayores economías del mundo, en que Alemania logró el primer puesto y Estados Unidos aparece en el número 13. El Consejo Estadounidense por una Economía de Energía Eficiente  (ACEEE, en inglés), una...

Should Men at Risk for Cardiovascular Disease Receive Earlier, More Aggressive Cholesterol-Lowering Treatment? - 22/07/2014 / Leido 202 veces/ Comentarios 0

New guidelines on cholesterol treatment and cardiovascular risk assessment state that men have at least double the risk of dying from atherosclerotic cardiovascular disease or of having a heart attack or stroke as do women with a similar risk profile (based on age, smoking history, and cholesterol...

Vulnerability of sharks as collateral damage in commercial fishing shown by study - 22/07/2014 / Leido 203 veces/ Comentarios 0

A new study that examined the survival rates of 12 different shark species when captured as unintentional bycatch in commercial longline fishing operations found large differences in survival rates across the 12 species, with bigeye thresher, dusky, and scalloped hammerhead being the most...

Extra exercise helps depressed smokers kick the habit faster - 22/07/2014 / Leido 188 veces/ Comentarios 0

People diagnosed with depression need to step out for a cigarette twice as often as smokers who are not dealing with a mood disorder. And those who have the hardest time shaking off the habit may have more mental health issues than they are actually aware of, research suggests. While nearly one in...

Therapeutic bacteria prevent obesity in mice, study finds - 22/07/2014 / Leido 175 veces/ Comentarios 0

A probiotic that prevents obesity could be on the horizon. Bacteria that produce a therapeutic compound in the gut inhibit weight gain, insulin resistance and other adverse effects of a high-fat diet in mice, investigators have discovered. Regulatory issues must be addressed before moving to human...

Preschoolers can reflect on what they don't know - 22/07/2014 / Leido 161 veces/ Comentarios 0

Contrary to previous assumptions, researchers find that preschoolers are able to gauge the strength of their memories and make decisions based on their self-assessments. The findings contribute to research on the reliability of children's eyewitness testimony in a court of law, and they carry...

Enhanced instrument enables high-speed chemical imaging of tissues - 22/07/2014 / Leido 163 veces/ Comentarios 0

A research team has demonstrated a dramatically improved technique for analyzing biological cells and tissues based on characteristic molecular vibrations. The new technique is an advanced form of Raman spectroscopy that is fast and accurate enough to create high-resolution images of biological...

Gaza bajo fuego: un desastre humanitario - 22/07/2014 / Leido 235 veces/ Comentarios 0

Los 15 días de bombardeos a los que Israel ha sometido ya al norte de Gaza obligaron a miles de civiles a huir de sus hogares y a buscar refugio en las escuelas gestionadas por la Agencia de la Organización de las Naciones Unidas para los Refugiados Palestinos (UNRWA). Entre los más afectados se encuentran […]Tras un...

Retail Pricing Strategies: Do Consumers Prefer Deep Discounts or Everyday Low Prices? - 22/07/2014 / Leido 163 veces/ Comentarios 0

Sometimes finding the best bang for your buck feels like a wild goose chase. It’s hard to know which stores offer the best prices at any given time. According to a new study in the Journal of Consumer Research, when trying to maximize savings, consumers will choose retailers they believe offer the...
1 2 3 4 5 » ... 1986

Forma parte de esta comunidad y contribuye al desarrollo e independencia de los contenidos de Tendencias21