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Ontario plans to join British Columbia in regulating traditional Chinese medicine and acupuncture by the end of the year. Ontario Health Minister George Smitherman made the announcement Friday, as a government-appointed panel released its recommendat
Don: Some people seem to need significantly less sleep than others. Yael: Tell me about it. I have a friend who swears that she sleeps only five hours a night. If she's telling the truth, then she must be bionic. She seems to have plenty of energy, a
Chattering Chimps We talk to our house pets all the time, but wouldnt it be great if your cat could answer you in English? Well, maybe it wouldnt be so great! We tend to assume that, because they dont speak human language, other animals are dumb, or
Terrestrial Planet Finder 瑞士科学家米歇尔梅耶带领欧洲科学家小组宣布发现了一颗新的可能适宜人类居住的星球,现在,他又制定了更大的目标:寻找地外生命的迹象。该发现小组的成员斯蒂凡尤
The Bloated Look of the Starving 饥饿性水肿,脂肪和肌肉丢失而使细胞外液体增多,组织张力降低,皮肤失去弹性。快要饿死的人,都是肚子大大的。 Its one of the most painful aspects of starvation to witness: th
Sinking River Deltas 据《生活科学》网站报道,美国科学家最新的研究报告显示,由于人类活动的影响,世界上大部分的河流三角洲正在不断下沉,使得该地区更易遭受到洪水和海洋风暴的袭击,
Gun Silencers 所谓消声手枪也不可能是完全无声,只是将声音尽量降低。手枪的消声方法有很多. 手枪的声音主要来自子弹出膛,空气冲出枪口是巨大的压力对外面的空气引起的冲击震动.消声器是
Parallax 视差就是从有一定距离的两个点上观察同一个目标所产生的方向差异。从目标看两个点之间的夹角,叫做这两个点的视差,两点之间的距离称作基线。只要知道视差角度和基线长度,就
How Your VCR holds a Note VCR-盒式磁带录像机VCR是Video Cassette Recorder的缩写盒式磁带录像机。就功能上而言,它是使用空白录像带并加载录像机进行影像的录制及存储的监控系统设备。VCR作为许多晚会
What Came First, Language or Perception? Have you ever wondered what came first? Language or perception? Find out on this Moment of Science. Yael: Down,what came first? Language or Perception? Down:Hey!Is this one of those questions with no answer? Y
The Heat Is On 热传递,是热从温度高的物体传到温度低的物体,或者从物体的高温部分传到低温部分的过程。热传递是自然界普遍存在的一种自然现象。只要物体之间或同一物体的不同部分之间
On The Prowl 猫是一种地盘性的动物,它们喜欢在外面与别的猫划分领地。公猫比母猫尤为如此公猫的领地可能会是母猫领地的十倍。猫划份地盘是与其自然天性有关的。对于一只野猫来说,占领
Coextinction 绝种是指生物群体逐渐消失的过程。物种和较大族群常态性的灭绝,并由更进步的形式所取代,这是进化的正常过程。然而,从化石的记录来看,有时会出现整个科目的动物和植物都
A Hyenas Sibling Rivalry 鬣狗,学名Hyaenidae,哺乳动物,是体型中等、生活在非洲、阿拉伯半岛、亚洲和印度次大陆的陆生肉食性动物。它们同属于一科:鬣狗科。外形略像狗,头比狗的头短而圆,
Body Dysmorphic Disorder Are you unhappy with your body? Learn about body dysmorphic disorder on this Moment of Science. Psychologists estimate that one to two percent of the population has what is called body dysmorphic disorder. These people obsess
Rapid Evolution and Population Dynamics 种群(population)指在一定时间内占据一定空间的同种生物的所有个体。种群中的个体并不是机械地集合在一起,而是彼此可以交配,并通过繁殖将各自的基因传给
What Is a Hypnotic? 失眠,指无法入睡或无法保持睡眠状态,导致睡眠不足。又称入睡和维持睡眠障碍(DlMS),祖国医学又称其为不寐、不得眠、不得卧、目不瞑,是以经常不能获得正常睡眠为特征的
Oceans Most Wanted 伴随着人们的经济活动和国际交往,一些物种由原生存地借助于人为作用或其他途径移居到另一个新的生存环境并在新的栖息地繁殖并建立稳定种群,这些物种被称为外来物种。
Grow Your Own Dentures 种植牙也叫人工种植牙,并不是真的种上自然牙齿,种植牙而是通过医学方式,将与人体骨质兼容性高的纯钛金属经过精密的设计,制造成类似牙根的圆柱体或其他形状,以外
Methuselah Insect 昆虫的寿命相对于地球上的其他生物而言,算比较短的,不过有一种昆虫的寿命相当长,那就是一种能17年的蝉。蝉寿命虽长,却要在土里面沉睡17年,当它睡醒之后,从土里钻出