版权声明：凡《光明日报》上刊载作品（含标题），未经本报或本网授权不得转载、摘编、改编、篡改或以其它改变或违背作者原意的方式使用，授权转载的请注明来源“《光明日报》”。 青少年了解4D打印技术。作者供图 从个性化的珠宝饰品到复杂的航空 ...

says the U.S. Department of Defense faces a vast array of technological obstacles to building an orbital shield that could effectively halt a mass launch of nuclear missiles. “The U.S. would ...

Sir Ernest Rutherford has been called the 'father of nuclear physics' When Donald Trump claimed US scientists split the atom in his inaugural speech, even he could not have imagined the chain ...

When Donald Trump claimed US scientists split the atom in his inaugural speech, even he could not have imagined the chain reaction of online debate his boast would cause. Many of those leaping on ...