As organisms on planet Earth diversified, some branches of the tree of life became exceptionally diverse, others much less so. Still others became extinct. Why evolution favored certain groups over others is a long-standing question in evolutionary science. Beetles are the poster child for evolutionary success: around 400,000 known species – about a quarter of … Read more
How it works: A proton (far left) from the Super Proton Synchrotron (SPS) accelerator at CERN collides with carbon nuclei (small gray spheres). This creates a shower of various elementary particles, including a large number of neutral pions (orange spheres). As the unstable neutral pions decay, they emit two high-energy gamma rays (yellow squiggly arrows). … Read more
This article was reviewed according to Science fact checked peer-reviewed publication trusted source proofread OK! How it works: A proton (far left) from the Super Proton Synchrotron (SPS) accelerator at CERN collides with carbon nuclei (small gray spheres). This creates a shower of various elementary particles, including a large number of neutral pions (orange spheres). … Read more