Start the Week Chemical Reactions
10 snips
Apr 27, 2026 
Professor Mark Miodownik, materials scientist who studies plastics and self-repairing materials. Professor Dame Ijeoma Uchegbu, pharmaceutical nanoscientist pioneering drug-delivery nanoparticles. Kit Chapman, science writer exploring chemistry’s global history. They discuss alchemy’s roots and the rise of modern chemistry. They explore nanomedicine, plastics versus biodegradables, PFAS risks, and self-healing materials for a sustainable future.
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Chemistry Began With Fire And Craft
- Chemistry originated from early human control of fire, leatherwork and metallurgy rather than purely abstract thought.
- Kit Chapman traces footprints like ancient furnaces and metal smelting from Africa to Sri Lanka as evidence of progressive material knowledge.
A Drip That Sparked A Career In Medicine
- Ijeoma Uchegbu describes a childhood moment when a doctor mixed a drip that revived a gravely ill family friend and sparked her interest in medicinal chemistry.
- The scene in southeast Nigeria after civil war showed medicine's real-world impact and seeded a career in making safer drugs.
Bonds Are The Conversations That Build Matter
- Atoms interact by exchanging or sharing electrons to form ions or covalent bonds which underpin every material and living structure.
- Ijeoma uses water, proteins and covalent plastics to show how bond types determine strength and function.
