ÎçÒ¹¸£Àû1000¼¯ºÏ'Smart drugs' don't make people better at a problem-solving test Some students take medicines like methylphenidate, often sold under the brand name Ritalin, to boost their performance before an exam, but research shows these drugs don't improve how well people do in tests News
ÎçÒ¹¸£Àû1000¼¯ºÏInhaled powder that coats airways can block coronavirus infection A gel that lines the respiratory tract prevented coronavirus infections in mice and monkeys, and may also work against any future new variants News