Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

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This anomaly is indicative of the larger challenge of culturing various microbial species, referred to as microbial “unculturability.” This cannot be explained by the use of agar alone or by the substitution of an alternative gelling agent, but rather by the difficulties in consistently recreating on an agar plate the multi-variable environment in which microbes grow naturally. Given such challenges, the risk of shortages, and the vulnerabilities of the agar supply chain, why is it so difficult to find suitable alternatives?

В США мальчик из штата Вермонт поймал крупного пресноводного горбыля и побил рекорд озера Шамплейн, который продержался почти десять лет. Об этом сообщает телеканал WPTZ.

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加拿大人格雷格在广州旅居多年,日前到天津旅行。走进茶馆听相声,徜徉杨柳青古镇欣赏年画,跟着“泥人张”匠人体验泥塑制作……“这些民俗风情、传统技艺,无不彰显出中华优秀传统文化的深厚底蕴。”格雷格说。