Kerry Hebden, Author at ¿ìè¶ÌÊÓƵ Science news and science articles from ¿ìè¶ÌÊÓƵ Tue, 25 May 2021 11:35:02 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.1 242057827 Only asteroids that hit a certain mineral trigger a mass extinction /article/2278447-only-asteroids-that-hit-a-certain-mineral-trigger-a-mass-extinction/?utm_campaign=RSS|NSNS&utm_content=currents&utm_medium=RSS&utm_source=NSNS Tue, 25 May 2021 07:00:47 +0000 /?post_type=article&p=2278447 2278447