[SunkenCiv]

For a long while it was taught that all of Earth's impact craters formed during the Late Heavy Bombardment, and that all trace of them had been eroded away, because Earth is unique etc. Turns out people just weren't looking for them, now nearly 200 have been identified and studied.

• Have scientists finally found the meteorite which set off the mysterious 1908 Tunguska catastrophe?
• Astronomy Picture of the Day -- Tunguska: The Largest Recent Impact Event
• When Comets Attack: Solving the Mystery of the Biggest Natural Explosion in Modern History
• Toxic Gases Caused World's Worst Extinction
• Russian Scientists In Bid To Solve Tunguska Event
• 100 years on, mystery shrouds massive 'cosmic impact' in Russia
• Planetary science: Tunguska at 100
• Tunguska, A Century Later
• Research: Asteroids pose greater danger
• Sandia supercomputers offer new explanation of Tunguska disaster
• Crater From 1908 Russian Space Impact Found, Team Says (Tunguska)
• Three-tonne meteorite stolen in Russia (rock from Tunguska)
• Crater Could Solve 1908 Tunguska Meteor Mystery
• A possible impact crater for the 1908 Tunguska Event
• Catastrophic Comet Chilled and Killed Ice Age Beasts (and Clovis people)
• Threat of Cometary Impacts may be Underestimated
• Grains Found in Ga. Traced to Asteroid
• Russian scientists claim discovery of alien spaceship wreck in Siberia
• Tunguska, Siberia - Russian scientists claim discovery of alien spaceship
• Russian Researchers Say Debris of Alien Spaceship found in Siberia
• Cosmic Collision May Have Created Hawaii
• Siberia Meteorite Flattens 40 Sq Miles
• Evidence Of Tunguska-Type Impacts Over The Pacific Basin Around The Year 1178 AD
• More Theories on Tunguska
• Cash Plea For Russian Meteor Chasers (Impact Crater)
• Asteroid 'Hit Northern Russia'
• Asteroid detected in a close call with Earth
• What Caused Argentina's Craters?
• Mystery space blast 'solved' [Italian Scientists Solve Mystery of 1908 Siberian Blast]

[ForGod'sSake]

Re same companion article posted on FR here:

Impact melt products as evidence for cosmic airbursts/impacts 12,900 years ago

Hung a few tags on it...