Security

Indiana notifying 750K after COVID-19 tracing data accessed

Indiana health officials said Tuesday they are notifying nearly 750,000 state residents that a cybersecurity company "improperly accessed" their personal data from the state's online COVID-19 contact tracing survey—a description ...

Engineering

Packaging-free design quadruples microbatteries' energy density

With wireless-enabled electronics becoming smaller and more ubiquitous, their designers must constantly find ways for batteries to store more power in less space. And because these devices are also increasingly mobile—in ...

Machine learning & AI

Machine learning applications need less data than has been assumed

A combined team of researchers from the University of British Columbia and the University of Alberta has found that at least some machine learning applications can learn from far fewer examples than has been assumed. In their ...

Business

Taiwan chipmaker TSMC says profit up 11.2% as demand rises

TSMC, the biggest contract manufacturer of processor chips for Apple Inc. and other global brands, said Thursday its latest quarterly profit rose 11.2% over a year earlier to $4.8 billion as demand for smartphones and consumer ...

Electronics & Semiconductors

Smarter electronics a step closer with nanotech advance

As silicon-based technology reaches its absolute limits, a material engineered by University of Queensland researchers could herald the next generation of electronics with more memory, faster speeds and advanced features.

Engineering

Spanish couple develop high-tech specs to help son see

When their two-year-old son Biel started falling over a lot and had difficulty climbing stairs after learning to walk, Jaume Puig and his wife sought medical help to figure out the problem.

Business

Drone delivery firm Zipline raises $250 mn for expansion

US-based drone operator Zipline, which has seen pandemic-fueled growth of delivery of vaccines and medical supplies in Africa and the United States, said Wednesday it raised $250 million as it moves to expand globally.

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Drug

A drug, broadly speaking, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. There is no single, precise definition, as there are different meanings in drug control law, government regulations, medicine, and colloquial usage.

In pharmacology, a drug is "a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being." Drugs may be prescribed for a limited duration, or on a regular basis for chronic disorders.

Recreational drugs are chemical substances that affect the central nervous system, such as opioids or hallucinogens. They may be used for perceived beneficial effects on perception, consciousness, personality, and behavior. Some drugs can cause addiction and/or habituation.

Drugs are usually distinguished from endogenous biochemicals by being introduced from outside the organism.[citation needed] For example, insulin is a hormone that is synthesized in the body; it is called a hormone when it is synthesized by the pancreas inside the body, but if it is introduced into the body from outside, it is called a drug.[citation needed] Many natural substances, such as beers, wines, and psychoactive mushrooms, blur the line between food and recreational drugs, as when ingested they affect the functioning of both mind and body and some substances normally considered drugs such as DMT (Dimethyltryptamine) are actually produced by the human body in trace amounts.

This text uses material from Wikipedia, licensed under CC BY-SA