|
gptkb:Altaic_(disputed)
|
gptkb:Micro-Altaic
|
|
gptkb:Alvarez_hypothesis_(dinosaur_extinction_by_asteroid_impact)
|
volcanism
|
|
gptkb:Snowball_Earth
|
gptkb:Slushball_Earth
|
|
gptkb:The_Altaic_Languages
|
gptkb:Transeurasian_languages
|
|
gptkb:Alvarez_hypothesis_(dinosaur_extinction)
|
volcanism
|
|
gptkb:Altaic_(disputed)
|
gptkb:Macro-Altaic
|
|
gptkb:1908_Tunguska_event
|
gptkb:Titan
|
|
gptkb:Alvarez_hypothesis_(dinosaur_extinction_by_asteroid_impact)
|
climate change
|
|
gptkb:The_Altaic_Languages
|
gptkb:Micro-Altaic
|
|
gptkb:Alvarez_hypothesis_(dinosaur_extinction)
|
climate change
|
|
gptkb:Alvarez_hypothesis_(dinosaur_extinction)
|
sea level change
|
|
gptkb:1908_Tunguska_event
|
natural gas explosion
|
|
gptkb:Altaic_(disputed)
|
gptkb:Transeurasian_languages
|
|
gptkb:The_Altaic_Languages
|
gptkb:Macro-Altaic
|
|
gptkb:1908_Tunguska_event
|
gptkb:asteroid
|