বৃহস্পতিবার, ৩০ মার্চ, ২০১৭

Hummingbirds




  • Hummingbirds are the tiniest birds in the world.  
  • Hummingbirds are the only birds that can fly both forward and backwards.
  • A hummingbird can weigh anywhere between 2 and 20 grams.
  • A hummingbird's metabolism is roughly 100 times that of an elephant.
  • Hummingbirds have tongues that are grooved like the shape of a "W".
  • Hummingbirds have no sense of smell, but can hear better than humans.
  • Hummingbirds see in ultraviolet light and they can see further than a human.
  • Hummingbirds have a great memory – they remember every flower & feeder they've been to, and how long it will take a flower to refill.
  • The hummingbird brain is 4.2% of its body weight – this is the largest, in proportion, of the wild bird group.
  • Hummingbirds are the only birds that can fly like a helicopter… up, down, sideways, front, and back!
  • Hummingbirds are the second largest family of birds with a total of 332 species.
  • A hummingbird's heart beats up to 1,260 times per minute.
  • Hummingbirds do not mate for life.
  • A baby hummingbird is roughly the size of a penny and is unable to fly.
  • The average life span of a hummingbird is 5 years, but they have been known to live for more than 10 years.
  • Hummingbirds fly at an average of 25-30 miles per hour, and are able to dive up to 50 miles per hour.

Celebrate Earth Day 2017

Saturday,
April 22
Earth Day 2017

রবিবার, ২২ জানুয়ারি, ২০১৭

First Lady of two different countries

Graca Machel was married to Samora Machel (1933-86), President of Mozambique from 1975 to 1986. President Machel was killed in a plane crash on 19 October 1986. On 18 July 1998 she married Nelson Mandela, President of South Africa, making her the first woman to be `First Lady' of two different countries.

শুক্রবার, ১৬ ডিসেম্বর, ২০১৬

Only Victory Day in The World


16th December is the Glorious Victory Day of Bangladesh.

Bangladesh is the Only Country in the World with Victory Day.

All other country have Independence Day but no Victory Day .

The Independence Day of Bangladesh is 26th March 1971

The Victory Day of Bangladesh is 16th December 1971


শনিবার, ১০ ডিসেম্বর, ২০১৬

Wangari Maathai


# Wangari Maathai was the first African woman to receive the Nobel Peace Prize(2004).

# She was also the first female scholar from East and Central Africa to take a doctorate (in biology)

# First female professor ever in her home country of Kenya. 


Maathai played an active part in the struggle for democracy in Kenya, and belonged to the opposition to Daniel arap Moi's regime.

In 1977 she started a grass-roots movement aimed at countering the deforestation that was threatening the means of subsistence of the agricultural population. The campaign encouraged women to plant trees in their local environments and to think ecologically. 

The so-called Green Belt Movement spread to other African countries, and contributed to the planting of over thirty million trees.

Maathai's mobilisation of African women was not limited in its vision to work for sustainable development; she saw tree-planting in a broader perspective which included democracy, women's rights, and international solidarity.


In the words of the Nobel Committee: "She thinks globally and acts locally.

Source