Jets revamp defense by trading for Minkah Fitzpatrick, signing Demario Davis and adding to D-line

Minkah Fitzpatrick is coming home and filling a major need for the New York Jets. Demario Davis also is returning — for a third stint with the team — to help lead a suddenly revamped defense.

Chemists create complex DNA structures without hydrogen bonds

No "sticky ends"? No problem. A new study by NYU chemists finds that DNA tiles can assemble into 3D structures without the ...