SUNSET: 
Sun Loses Lithium with Age
Observations of two solar twins — one old and one young — confirm that the Sun has probably destroyed the fragile element as the star has grown older.
Universe's Lithium Problem A Bit Better
Studies of primitive stars suggest the universe has far too little of one form of lithium and far too much of another. But new work shows that the second problem might be nonexistent.
Universe is Still Missing its Lithium
New observations of the Small Magellanic Cloud have only heightened the mystery surrounding a decades-long cosmic conundrum: why does the universe have so much less lithium than astronomers think it should?
The Universe’s Lost Lithium
Astronomers are still struggling with a 30-year-old mystery that puts modern cosmology in a head-to-head clash with stellar observations. A new study may make the problem even worse.
