Our planet has endured a tumultuous year of rising temperatures, natural disasters and wildlife extinctions, but it's not been all bad news for Mother Earth. We take a look back at the key environmental stories of 2017.

On 11 January, a new cousin of ours was announced by an international team of researchers, who named the rare primate the Skywalker hoolook gibbon, after the popular Star Wars character. The endangered gibbon lives in threatened forests in China, Myanmar, Bangladesh and India.

Triggered by copious snowfall and a series of earthquakes, a devastating avalanche hit the resort of Rigopiano in central Italy on the afternoon of 18 January. The avalanche, Italy's worst for a century, buried the luxury Hotel Rigopiano, claiming 29 lives and injuring eleven others.

Staying in Italy, the infamous Mount Etna volcano on the island of Sicily erupted on 28 February for the first time in two years. A couple of weeks later on 16 March, a sudden explosion on the volcano injured 10 people, including members of a BBC camera crew.

On 14 March, a team at the Swedish Museum of Natural History in Stockholm reported the discovery of the world's oldest plant-like fossils, red algae that were found in ancient rocks in central India. The algae are estimated to be a staggering 1.6 billion years old.

The planet continued to heat up in 2017. Data from NASA showed that March 2017 was the second hottest on record for the planet, second only to March 2016, which broke all known records.

On 28 March, President Trump issued an executive order dismantling his predecessor's Clean Power Plan, including tearing up emission rules for power plants and federal coal leasing.

In late March, scientists from America's National Snow and Ice Data Center (NSIDC) confirmed that sea ice at the North and South Poles had dwindled to record low levels, which they put down to accelerating climate change.

Scientists studying Australia's Great Barrier Reef announced some sobering news in early April. Two recent back-to-back bleaching events had damaged two-thirds of the entire reef, making for an unprecedented ecological disaster.

Almost miraculously, a new island appeared off the North Carolina coast in April. The all-new Cape Hatteras sandbank, which has been named Shelly Island by locals, was discovered by tourist Chad Koczera, who launched a drone to capture this sensational image.

On April 27, a team of scientists from Utrecht in the Netherlands revealed their audacious plan to rebuild the Morteratsch glacier in Switzerland using 4,000 snow machines. A pilot project is already underway to restore an 800-metre stretch of the snow field.

The so-called Iceberg Alley off the coast of Newfoundland is no stranger to massive icebergs, but in spring 2017 the 'bergs were supersized. Unusually strong counter-clockwise winds and the effects of warming in the Arctic led to their formation.

Warming in the Arctic was also the cause of melting permafrost on Svalbard, which caused flooding in the island's 'Doomsday' Global Seed Vault, casting doubts on the facility's ability to provide adequate protection for the planet's precious seeds.

On 1 June, President Trump announced that the US was pulling out of the Paris Agreement to mitigate climate change, citing damage to the US economy as the main justification for his decision. The news was met with wide disapproval by politicians and environmentalists worldwide.

Temperatures soared to a hellish 48°C (118°F) in Phoenix for two consecutive days in late June, almost breaking the absolute record of 50°C (122°F) that was set in 1990. At the city's airport, the extreme heat grounded planes, which are unable to function in such sweltering temperatures.

On 12 July, a trillion-tonne iceberg the size of Luxembourg broke away from the Larsen C ice shelf in Antarctica. The iceberg spanned 5,800 square kilometres, which makes it one of the most enormous ever recorded.

Both the coldest and warmest parts of the US experienced their hottest July on record. Records were smashed in parts of Alaska, and Death Valley baked with an average temperature of 42°C (107°F), the hottest monthly temperature ever measured in the Western Hemisphere.

This year's Earth Overshoot Day (EOD), the date when demand for the planet's resources outstrips supply, fell on 2 August. While this is a slight improvement on last year, it contrasts big-time with 1987's EOD, which fell as late as 19 December.

The first major Atlantic hurricane of 2017 formed in early August. By the season's end in November, a total of 10 hurricanes had caused untold devastation in the Caribbean, Central America and the USA, making it the most destructive season since 2012.

In August, Chile's Atacama Desert was blanketed with wildflowers following rare rainfall. The 'deserto florido' (flowering desert) phenomenon occurs every five to seven years, with this year's show particularly glorious. The deserts of California experienced a similar 'superbloom' back in April.

Dubbed 'The Great American Eclipse', large parts of the US experienced a totality on 21 August as a solar eclipse passed from the Pacific to the Atlantic coasts. A total of 14 states were touched by total darkness, around 16% of the entire US.

A report released by the World Wildlife Fund (WWF) and Mamirauá Institute for Sustainable Development on 30 August revealed that 381 new species had been discovered in the Amazon in the previous 24 months, making the preservation of this threatened ecosystem all the more important.

In September, geologists from the University of Tokyo reported that they'd discovered evidence of microbes in 3.95-billion-year-old rocks from Newfoundland in Canada, the oldest proof of life on earth ever found.

While the UK is still pondering whether to re-introduce the European Lynx, Kazakhstan has gone full steam ahead with repopulating the country with wild tigers, which died out in the country 70 years ago.

Like March, October was a record-breaking month for heat on the planet, according to NASA climate experts. The average world temperature was only marginally cooler than the hottest October ever in 2015.

On 2 November, NASA scientists reported that the hole in the Ozone Layer had shrunk to its smallest size since 1988. But it's not all good news. The experts believe the decrease is partly caused by rising temperatures in the Antarctic.

The WWF declared in November that a wetland area in the Congo measuring a whopping 4.5 million hectares would be accorded protected status, safeguarding its water supplies and rich biodiversity for the future.

Later in November, NASA scientists announced that this year is likely to go down as the second or third warmest year on record.

Pollution reached apocalyptic levels in the Indian capital during November and December. Smoke from crop fires in neighbouring states and calm weather conditions pushed pollution levels to 75 times the level regarded as safe by the World Health Organization, sparking a major health emergency.

Earlier this month, a study revealed that three species of lizards have mysteriously died out on Australia's Christmas Island. Scientists have no idea why the Lister's gecko, blue-tailed skink and the Christmas Island forest skink have become extinct but think invasive species may be to blame.

President Trump drew the ire of everyone from Native Americans to environmentalists on 4 December when he announced plans to shrink two of Utah's national monuments, Grand Staircase-Escalante and Bears Ears, in order to open the area up for mining.

On 6 December, the UN passed a resolution to stop plastic waste from entering the planet's oceans. A stronger-worded motion was rejected by the US delegation and it remains to be seen whether this non-binding move will make any difference.