An underground tunnel network long rumored thanks to drawings by Leonardo da Vinci under Milan’s Sforza Castle are proven to exist. Ground-penetrating radar and laser scanning revealed that the ...

The study, by Dr. H. Akagi at University of Ottawa in Ottawa, Ontario, Canada and colleagues, was titled, "Laser Tunnel Ionization from Multiple Orbitals in HCl." ...

a laser is used to create a tunnel in the cornea to place the color pigment. A French company that trains ophthalmologists to ...