A perfectly preserved ancient tree fossil offered scientists an unprecedented view into a moment 42,000 years ago when the ...

The solar maximum, a period of intense activity, precedes the reversal of the magnetic field, which is manifested by a change in polarity at the poles of our star. The reversal of the Sun's magnetic ...

With the right preparations and technological solutions in place, aviation would continue to operate safely, even during a ...

Besides, we thought, would anybody really want reversal of dilation? We dilate many patients every day. Does anybody really mind? Some of us remember Rev-Eyes (dapiprazole hydrochloride ophthalmic ...

This is because it requires the targeted reversal of the polarity of one of the two carbonyl groups. The key to this new success was the use of a special functional group called a hydrazone ...