Image: Live ScienceScience news this week: James Webb telescope finds a never-before-seen substance, China's 'Great Green Wall' grows faster than natural trees, and a Medici murder mystery is solved
• The July 4, 2026, science roundup highlights three major discoveries: the James Webb Space Telescope's identification of a previously unknown substance, the rapid growth of China's "Great Green Wall," and the resolution of a Medici family murder mystery. • The report emphasizes the telescope's role in expanding astronomical knowledge and the environmental impact of China's accelerated reforestation efforts. • These findings matter as they bridge the gap between cutting-edge astrophysics, global climate mitigation, and historical forensic analysis.
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