Belgian-American scientist Francis Halzen has won the 2026 Nobel Prize in Physics for his work detecting high-energy neutrinos - elusive particles that can provide scientists with clues about the universe. Halzen helped develop a giant observatory beneath the Antarctic ice to detect these particles. In this clip, he explains how the observatory works.

<p>Belgian-American scientist Francis Halzen has won the 2026 Nobel Prize in Physics for his work detecting high-energy neutrinos - elusive particles that can provide scientists with clues about the universe. Halzen helped develop a giant observatory beneath the Antarctic ice to detect these particles. In this clip, he explains how the observatory works.</p>