The paper presents neutron scattering measurements on a single crystal of the spin-1/2 kagomé lattice antiferromagnet ZnCu3(OD)6Cl2 (herbertsmithite) to investigate the spin liquid state. The authors observe a spinon continuum, indicating the presence of deconfined spinons, which are fundamental excitations in quantum spin liquids. This is the first observation of a spinon continuum in a two-dimensional magnet. The results support the idea that herbertsmithite is in a quantum spin liquid state, characterized by short-range resonating-valence-bond (RVB) correlations and spin correlations extending beyond nearest neighbors. The data also suggest that the excitations are gapless over a wide range of momentum transfers, challenging the existence of a spin gap in the ground state. The findings provide strong evidence for the quantum spin liquid nature of herbertsmithite and lay the groundwork for further theoretical and experimental studies.The paper presents neutron scattering measurements on a single crystal of the spin-1/2 kagomé lattice antiferromagnet ZnCu3(OD)6Cl2 (herbertsmithite) to investigate the spin liquid state. The authors observe a spinon continuum, indicating the presence of deconfined spinons, which are fundamental excitations in quantum spin liquids. This is the first observation of a spinon continuum in a two-dimensional magnet. The results support the idea that herbertsmithite is in a quantum spin liquid state, characterized by short-range resonating-valence-bond (RVB) correlations and spin correlations extending beyond nearest neighbors. The data also suggest that the excitations are gapless over a wide range of momentum transfers, challenging the existence of a spin gap in the ground state. The findings provide strong evidence for the quantum spin liquid nature of herbertsmithite and lay the groundwork for further theoretical and experimental studies.