<P> Apa in his May 2010 Trek says that climbing to Everest has become tough due to the melting of ice and rock surfaces . He sees visible changes on the Everest summit due to global warming . </P> <P> Apa has now climbed Mount Everest a total of 21 times . Aside from these 21 ascents, Apa has also participated in unsuccessful attempts . </P> <P> While Apa's 21 ascents were once the record for most ascents of Everest, which he held jointly with Phurba Tashi and Shishir Bhattarai, Kami Rita Sherpa made his 22nd ascent on 16 May, 2018, putting Apa in a tie for second . </P> <Table> <Tr> <Th> #</Th> <Th> Date </Th> <Th> Expedition </Th> </Tr> <Tr> <Td> </Td> <Td> May 10, 1990 </Td> <Td> International </Td> </Tr> <Tr> <Td> </Td> <Td> May 8, 1991 </Td> <Td> Sherpa Support / American Lhotse </Td> </Tr> <Tr> <Td> </Td> <Td> May 12, 1992 </Td> <Td> New Zealand </Td> </Tr> <Tr> <Td> </Td> <Td> October 7, 1992 </Td> <Td> Everest International </Td> </Tr> <Tr> <Td> 5 </Td> <Td> May 10, 1993 </Td> <Td> American </Td> </Tr> <Tr> <Td> 6 </Td> <Td> October 10, 1994 </Td> <Td> Everest International </Td> </Tr> <Tr> <Td> 7 </Td> <Td> May 15, 1995 </Td> <Td> American On Sagarmatha </Td> </Tr> <Tr> <Td> 8 </Td> <Td> April 26, 1997 </Td> <Td> Indonesian </Td> </Tr> <Tr> <Td> 9 </Td> <Td> May 20, 1998 </Td> <Td> EEE </Td> </Tr> <Tr> <Td> 10 </Td> <Td> May 26, 1999 </Td> <Td> Asian - Trekking </Td> </Tr> <Tr> <Td> 11 </Td> <Td> May 24, 2000 </Td> <Td> Everest Environmental Expedition </Td> </Tr> <Tr> <Td> 12 </Td> <Td> May 16, 2002 </Td> <Td> Swiss Everest 50th Anniversary Expedition 1952--2002 </Td> </Tr> <Tr> <Td> 13 </Td> <Td> May 26, 2003 </Td> <Td> American Commemorative Expedition </Td> </Tr> <Tr> <Td> 14 </Td> <Td> May 17, 2004 </Td> <Td> Dream Everest Expedition 2004 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> May 31, 2005 </Td> <Td> Climbing for a cure </Td> </Tr> <Tr> <Td> 16 </Td> <Td> May 19, 2006 </Td> <Td> Team No Limit </Td> </Tr> <Tr> <Td> 17 </Td> <Td> May 16, 2007 </Td> <Td> Super Sherpas </Td> </Tr> <Tr> <Td> 18 </Td> <Td> May 22, 2008 </Td> <Td> The Eco Everest Expedition </Td> </Tr> <Tr> <Td> 19 </Td> <Td> May 21, 2009 </Td> <Td> The Eco Everest Expedition </Td> </Tr> <Tr> <Td> 20 </Td> <Td> May 22, 2010 </Td> <Td> The Eco Everest Expedition </Td> </Tr> <Tr> <Td> 21 </Td> <Td> May 11, 2011 </Td> <Td> The Eco Everest Expedition </Td> </Tr> </Table>

Who has been to the top of everest the most