The prefrontal cortex (PFC) provides 'top-down', higher-order guidance of thought, attention, behaviour and emotion, with dorsolateral regions regulating cognition, and ventromedial regions regulating ...

Natural selection uses duplicated genes as raw material for functional innovation, co-opting their existing features to new functions. Understanding genetic innovation requires two questions to be ...

2025年10月，一家位于波士顿的医疗科技公司遭遇一场“教科书式”的网络攻击。攻击者并未暴力破解密码，也没有利用零日漏洞，而是通过一封看似普通的会议邀请邮件，附带一个名为“Q3_Investor_Briefing.html”的附件。财务总监Sarah点击后，浏览器跳转至一个与Microsoft 365登录页几乎无法区分的页面。她输入账号密码，随后手机收到一条来自微软的验证码短信——她照常输入。 几 ...

Coffee contains caffeine and other bioactive compounds, including antioxidants like chlorogenic acids plus cafestol, kahweol, and trigonelline, though amounts vary per cup. Caffeine blocks adenosine, ...

Gain-of-function research (GOFR) refers to the serial passaging of microorganisms to increase their transmissibility, virulence, immunogenicity, and host tropism by applying selective pressure to a ...

This widely used method of calculating returns considers a portfolio's cash flows Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles ...