Young Eartg

The short list of reasons the earth is young.

Helium in the atmosphere,
Helium in the ground,
Geological activity of the moon,
Roche limit, Build up of carbon 14 [Only enough in the atmosphere for an earth less than 20,000 years old],
Human population,
Natural plutonium,
Erosion of continents,
Earth’s magnetic field,
Oil pressure in the earth,
Natural gas in the earth,
Orphan radio halos,
Neutrons & strontium,
Coral reef growth,
Oldest living plants,
Human civilizations,
River delta growth,
Under sea oil seepage,
Uranium in sea,
Neutrons and lead,
Interstellar gas expansion,
C-14 in meteorites,
Interplanetary dust removal,
Lifetime of meteor showers,
Peat bog growth,
Poly-strata fossils,
Hardening of rocks,
Decay of Saturn’s rings,
Potassium in the sea,
Titan’s methane loss,
Internal heat of Io,
Leaching of chlorine,
Radiogenic lead,
Niagara Falls erosion,
Seafloor calcareous ooze,
Uranium decay,
Squashed radio halos,
rotating spiral galaxies that cannot last billions of years; they would be twisted up beyond recognition,
multitudes of hot blue stars which cannot last billions of years,
decaying magnetic fields,
disintegrating comets,
the horizon problem.